30:
Similarly,
同様に、
air does not conduct heat
空気は熱を伝えない
as well as water.
水ほどには
同様に、空気は水ほどには熱を伝えない。
similarly 同様に
conduct 伝導する
Similarly, air does not conduct heat as well as water.
31:
They, too,
それらもまた、
are poor conductors of heat
熱の伝導性が低く
and so a very good protection
それゆえ非常によい防御となる
against cold.
寒さに対して
それらもまた熱伝導率が低く、そのため寒さを防ぐのには非常によい。
conduct 伝導する
They, too, are poor conductors of heat and so a very good protection against cold.
32:
This can be easily proved.
これは簡単に証明できる。
これは簡単に確かめられる。
prove 証明する
This can be easily proved.
Some people wear a fur coat
毛皮のコートを着る人もいる
for warmth in winter,
冬に暖かさを求めて
but few realize
しかしほとんどの人は気づいていない
that the fur in itself
毛皮そのものが
is not really warm at all.
決してそれほど暖かくないということに
冬に暖かさを求めて毛皮のコートを着る人もいるが、毛皮そのものは決してそれほど暖かくないことに気づいている人は少ない。
fur 毛皮
realize 気づく
Some people wear a fur coat for warmth in winter, but few realize that the fur in itself is not really warm at all.
In fact,
実際、
it has the same temperature
それ(毛皮)は同じ温度である
as its environment.
周囲の環境と
実際、毛皮の温度は周囲の温度と同じである。
temperature 温度
surroundings 周りの環境
In fact, it has the same temperature as its environment.
It does not warm us
それは私たちを温めるのではなく
but keeps us warm.
私たちを暖かく保つのだ
毛皮は私たちを温めてくれるのではなく、熱が逃げないようにしているのである。
It does not warm us but keeps us warm.
The source of heat is our body,
熱源は私たちの体であって、
not the fur.
毛皮ではない
熱源は私たち自身の体であって、毛皮ではない。
The source of heat is our body, not the fur.
Fur is specially suited
毛皮は特に適している
to preserving body heat
体温を保つのに
by preventing it from flowing off
それが流れ出るのを防ぐことによって
into the cold surroundings.
冷たい周囲の中へ
毛皮は体温が周囲の冷たい空気の中に流れ出ていくのを防いで熱を保つのにとりわけ適している。
fur 毛皮
suited 適して
preserve 保護する
prevent O from doing Oが～するのを防ぐ
⇒整理63 V O from doing
surroundings 周りの環境
Fur is specially suited to preserving body heat by preventing it from flowing off into the cold surroundings.
In other words,
言い換えると、
fur does not let heat pass through it easily
毛皮は簡単には熱を通さない
: it is a poor conductor of heat.
つまり熱伝導性が低いのだ
言い換えると、毛皮は簡単には熱を通さないということだ。
fur 毛皮
let O do Oに～させる
⇒整理50 V O do
In other words, fur does not let heat pass through it easily: it is a poor conductor of heat.
Different materials
異なる素材は
conduct heat differently.
熱を異なる仕方で伝える
素材が異なると熱伝導率も異なる。
material 材質
conduct 伝導する
Different materials conduct heat differently.
A frying pan with an iron handle
鉄の柄のついたフライパンは
soon gets too hot to be touched.
すぐに熱くなって触れなくなる
柄が鉄のフライパンはすぐに熱くなって触れなくなる。
A frying pan with an iron handle soon gets too hot to be touched.
This is
これは
because iron allows heat
鉄が熱を通すからである
to pass through it
それを通り抜けるのを
very quickly.
非常に速く
これは鉄が非常に速く熱を伝えるからだ。
allow O to do Oが～するのを許可する、可能にする
⇒整理51 V O to do
This is because iron allows heat to pass through it very quickly.
We prefer our frying pans
私たちはフライパンが～であることを好む
to have wooden handles
木製の柄を持つことを
since wood is a poor heat conductor.
木は熱伝導性が低いので
フライパンは木製の柄のついたものの方がよい。
prefer O to do Oが～するのを好む
⇒整理51 V O to do
We prefer our frying pans to have wooden handles since wood is a poor heat conductor.
We would find a room of 22°C quite comfortable
私たちは22度の部屋をかなり快適だと感じるだろう
even if we wore just a swimsuit,
たとえ水着しか着ていなくても
while bath water of the same temperature
一方、同じ温度のお風呂の水は
is unpleasantly cool.
不快なほど冷たく感じられる
水着しか着ていなくても、気温22度の部屋は快適だが、お風呂の湯が同じ温度なら冷たくて入っていられない。
find O C OがCだと思う
temperature 温度
We would find a room of 22°C quite comfortable even if we wore just a swimsuit, while bath water of the same temperature is unpleasantly cool.
The water takes heat
水は熱を奪う
from our warm body
私たちの温かい体から
much more quickly than the air does.
空気よりもずっと速く
水は空気よりずっと急速に私たちの体から熱を奪ってしまうのである。
The water takes heat from our warm body much more quickly than the air does.
Different parts of our body
異なる体の部位は
conduct heat differently.
熱の伝え方も異なる
私たちの体も場所によって熱の伝え方が違う。
conduct 伝導する
Different parts of our body conduct heat differently.
An object
物体は
{that is too hot to be touched
触れるには熱すぎる
for more than a second
1秒以上
with our hands or lips}
手や唇で
can be in contact
接触することができる
with a fingernail
爪で
for some time.
しばらくの間
手や唇だったら熱くて1秒と触れていられないものでも、爪なら少しの間触れていることができる。
object 物体
An object that is too hot to be touched for more than a second with our hands or lips can be in contact with a fingernail for some time.
That is
それは～である
because a fingernail is a poor conductor of heat
爪は熱伝導性が低いから
and the heat only reaches
そして熱は～にしか達しない
the sensitive layerunder the nail
爪の下にある敏感な層
gradually.
徐々に
それは爪が熱を伝えにくく、爪の下にある敏感な層に熱が徐々にしか達しないからである。
sensitive 敏感な
layer 層
gradually 段階的に
That is because a fingernail is a poor conductor of heat and the heat only reaches the sensitive layer under the nail gradually.
Hair and feathers
髪の毛や羽毛は
consist of materials similar to nails.
爪に似た材質でできている。
髪の毛や羽毛は、爪に似た材質でできている。
Hair and feathers consist of materials similar to nails.
In addition to this feature,
この特徴に加えて、
they keep a layer of air underneath.
その下に空気の層を保っている。
この特徴に加えて、それらはその下に空気の層を保っている。
In addition to this feature, they keep a layer of air underneath.
So geese, hares, and even bears in Siberia
だから、ガチョウや野ウサギ、そしてシベリアのクマでさえも
do not need special winter coats.
特別な冬用のコートを必要としない。
だから、ガチョウや野ウサギ、そしてシベリアのクマでさえも、特別な冬用のコートを必要としないのだ。
So geese, hares, and even bears in Siberia do not need special winter coats.
They have been given warm coats
彼らは暖かい毛皮を与えられてきた
by Nature.
自然によって。
have been given
⇒現在完了＋受動態
「今までに～されてきた」
彼らは自然によって暖かい毛皮を与えられてきた。
They have been given warm coats by Nature.
Humans,
人間は、
having only a very small amount
ごくわずかな量しか持っていないので
of natural hair,
天然の体毛を、
have hunted birds and animals
鳥や動物を狩ってきた
for their feathers and fur
その羽毛や毛皮を求めて
since ancient times,
大昔から、
and we still use
そして今でも私たちは使っている
feather bedcovers and wool blankets.
羽毛布団や毛の毛布を。
人間はごくわずかな体毛しか持たないため、大昔から羽毛や毛皮を求めて鳥や動物を狩ってきたし、今でも羽毛布団や毛の毛布を使っている。
Humans, having only a very small amount of natural hair, have hunted birds and animals for their feathers and fur since ancient times, and we still use feather bedcovers and wool blankets.
30 Similarly, air does not conduct heat as well as water.
31 They, too, are poor conductors of heat and so a very good protection against cold.
32 This can be easily proved.
Some people wear a fur coat for warmth in winter, but few realize that the fur in itself is not really warm at all. In fact, it has the same temperature as its environment. It does not warm us but keeps us warm. The source of heat is our body, not the fur. Fur is specially suited to preserving body heat by preventing it from flowing off into the cold surroundings. In other words, fur does not let heat pass through it easily: it is a poor conductor of heat.
Different materials conduct heat differently. A frying pan with an iron handle soon gets too hot to be touched. This is because iron allows heat to pass through it very quickly. We prefer our frying pans to have wooden handles since wood is a poor heat conductor. ① We would find a room of 22°C quite comfortable even if we wore just a swimsuit, while bath water of the same temperature is unpleasantly cool. ② The water takes heat from our warm body much more quickly than the air does.
Different parts of our body conduct heat differently. ③ An object that is too hot to be touched for more than a second with our hands or lips can be in contact with a fingernail for some time. That is because a fingernail is a poor conductor of heat and the heat only reaches the sensitive layer under the nail gradually. ④
Hair and feathers consist of materials similar to nails. ⑤ In addition to this feature, they keep a layer of air underneath. So geese, hares, and even bears in Siberia do not need special winter coats. They have been given warm coats by Nature. ⑥ Humans, having only a very small amount of natural hair, have hunted birds and animals for their feathers and fur since ancient times, and we still use feather bedcovers and wool blankets.
Some people wear a fur coat for warmth in winter, but few realize that the fur in itself is not really warm at all. In fact, it has the same temperature as its environment. It does not warm us but keeps us warm. The source of heat is our body, not the fur. Fur is specially suited to preserving body heat by preventing it from flowing off into the cold surroundings. In other words, fur does not let heat pass through it easily: it is a poor conductor of heat.
Different materials conduct heat differently. A frying pan with an iron handle soon gets too hot to be touched. This is because iron allows heat to pass through it very quickly. We prefer our frying pans to have wooden handles since wood is a poor heat conductor. Similarly, air does not conduct heat as well as water. We would find a room of 22°C quite comfortable even if we wore just a swimsuit, while bath water of the same temperature is unpleasantly cool. The water takes heat from our warm body much more quickly than the air does.
Different parts of our body conduct heat differently. This can be easily proved. An object that is too hot to be touched for more than a second with our hands or lips can be in contact with a fingernail for some time. That is because a fingernail is a poor conductor of heat and the heat only reaches the sensitive layer under the nail gradually.
Hair and feathers consist of materials similar to nails. They, too, are poor conductors of heat and so a very good protection against cold. In addition to this feature, they keep a layer of air underneath. So geese, hares, and even bears in Siberia do not need special winter coats. They have been given warm coats by Nature. Humans, having only a very small amount of natural hair, have hunted birds and animals for their feathers and fur since ancient times, and we still use feather bedcovers and wool blankets.
