expand and contract 热胀冷缩-凯发k8官网

expand and contract 热胀冷缩

文章来源：未知文章作者：enread 发布时间：2016-08-25 06:35 字体： [ ]　

(单词翻译:双击或拖选)

teacher: we all know that heat causes an object to expand and cold causes it to ¹. now, can anyone give me a good example?

john: well, in the summer the days are long, and in the winter the days are short.

老师：我们都知道热胀冷缩的道理。现在，谁给我举个例子？

约翰：嗯，在夏天天都长，在冬天天都短。

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1
n.合同，契约，婚约；v.使缩短，感染，订约
参考例句：
the terms of the contract are acceptable to us.我们认为这个合同的条件可以接受。 i'm under contract to teach here for one year.我按照聘约要在这里教一年书。