如果头痛只发生在晚上，缺少新鲜空气和氧气常常是其原因。

If headaches only occur at night, lack of fresh air and oxygen is often the cause.

《柯林斯英汉双解大词典》

美国社会心理的显著高涨，其原因之一在于这个国家的实用主义传统。

One reason for the striking upsurge of social psychology in the United States lies in the pragmatic tradition of this country.

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几个世纪以来，探险家们冒着生命危险探索未知的世界，其原因在不同程度上与经济和民族主义有关。

For centuries, explorers have risked their lives venturing into the unknown for reasons that were to varying degrees economic and nationalistic.

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There must be fundamental reasons for it and I wanted to go over some of the fundamental reasons why we have banks.

它的形成必有其根本的原因,下面我就阐述银行产生的一些基本原因,为什么会有银行

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The reason it looks like a tautology, because you look around, nothing seems to have its velocity forever.

其原因听起来像是绕圈子,因为你看看四周,似乎一切都不可能永远运动下去

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You can blame it on other things like the oil crisis of 1979 nothing is completely simple.

你也可以将其归于另外的原因,比如说1979年的石油危机9,但是没有任何事是完全单纯的。

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