The nineteen thirties was named the "Jazz Age"in American history.
二十年代被称为美国历史上的“爵士乐时代”。
This was the nation's lowest growth rate since the nineteen thirties.
这是自20世纪30年代以来美国人口增长率最低的十年。
The downturn is bad, but it would have to get much worse to compare to the nineteen thirties.
经济衰退的形势很糟糕，但是这可能比上世纪三十年代的情况还要糟。
Researchers have known since the nineteen thirties that the actively growing tip of a plant releases a hormone called auxin.
自1930S起，研究人员就了解到生长旺盛的植物顶梢会释放出一种被称为茁长素的激素。
She worked sewing clothes from the nineteen thirties until nineteen fifty-five. Then she became a representation of freedom for millions of African-Americans.
罗莎.帕克斯是蒙哥马利市的一名缝纫师，她从二十世纪三十年代一直到1955年一直做裁缝，后来，她成为无数非裔美国人追求自由的代表。
These comedies, with plenty of songs, were a popular form of entertainment in the nineteen twenties and nineteen thirties.
这些伴随大量歌曲的喜剧在二十世纪二、三十年代是非常受欢迎的形式。
The chart clearly shows that G.D.P. fell further in the nineteen-thirties.
图中很清楚的显示出在三十年代，G.D.P.下跌的更厉害。
Economists reported in twenty-ten that the worst recession since the nineteen-thirties had ended. Americans began to spend more as the year ended.
经济学家2010年报告称，自二十世纪三十年代以来的最严重衰退已经过去，美国人在今年年终已经开始扩大消费。
In the early nineteen thirties, Langston Hughes traveled to Cuba and Haiti. He later traveled across the southern United States, doing poetry readings and trying to sell his books.
在二十世纪三十年代初，兰斯顿·休斯到古巴和海地旅行，后来，他横穿整个美国南部，他一边朗诵他的诗歌，一边推销他的书。
In the early nineteen thirties, Langston Hughes traveled to Cuba and Haiti. He later traveled across the southern United States, doing poetry readings and trying to sell his books.
在二十世纪三十年代初，兰斯顿·休斯到古巴和海地旅行，后来，他横穿整个美国南部，他一边朗诵他的诗歌，一边推销他的书。
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