When twelve-year-old John Wilson walked into his chemistry class on a rainy day in 1931, he had no way of knowing that his life was to change completely.

1931年的一个雨天，12岁的约翰·威尔逊走进他的化学教室，那会儿他完全不知道自己的生活将彻底改变。

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A year later, in 1931, the Empire State Building became the new winner.

一年后，在1931年，帝国大厦成为新的冠军。

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He was born in Indiana in 1931, but his parents moved to California when he was five.

1931年，他出生在印第安纳州，但他的父母在他5岁时搬到了加州。

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The city has not had a Republican mayor since 1931.

VOA: special.2009.01.12

In 1931, at Columbia University, Harold Yuri discovered this isotope, which has two.

931年在哥伦比亚大学，哈罗德尤里发现同位素，有两个核电荷数。

麻省理工公开课 - 固态化学导论课程节选

In 1931 they dropped convertibility of the pound sterling still called pound sterling even though it's not silver it was gold.

在1931年，他们放弃了英镑的可兑换性,仍然叫做英镑的话,即便它不是银，而是金。

耶鲁公开课 - 金融市场课程节选