TPO 23 閱讀 Urban Climate - 英檢

各位戰友好,

小弟在昨日做完TPO23的閱讀第一篇Urban Climate後, 在第五題有問題

5. According to paragraph 3, why do materials in the countryside have a lower
heat capacity than materials in cities do?
○In the countryside the Sun is the only important source of heat.
○Construction materials in the city are not as good at keeping buildings
warm as they are in the countryside.
○In the countryside the solar heat that flows into the ground flows out
again quickly.
○Countryside vegetation prevents heat from being trapped in the ground.

答案為D, 已知關鍵句如下

But in the countryside materials have a significantly lower heat capacity
because a vegetative blanket prevents heat from easily flowing into and out
of the ground.

雖然知道AB未在文中提到, 且C與原文相反,
但是我就是不懂easily flowing into and out of the ground
和being trapped in the ground是同義...

"防止熱輕易流入和流出土壤"和"防止熱被困在土壤"是同義?

請求各位大大解說...感覺自己好像是文盲!

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