The first authoritative study of polio was published in 1840.

关于小儿麻痹症的首篇权威研究报告发表于1840年。

《柯林斯英汉双解大词典》

In 1840, photography was developed once more.

1840年，摄影技术再次得到了发展。

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Samuel Ullman was born in 1840 in Germany and came to American as a boy.

塞缪尔.厄尔曼1840年生于德国，童年时移居美国。

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He made a trip to Kentucky, Clay's home state, late in 1840.

VOA: special.2009.01.22

And he did. But the important thing is that they had to have a translator for him in the 1840s.

他也是这样讲的,关键是,在1840年代还得给他找个翻译

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Or was it 1840? Or was it really in the wake of the Mexican War when you get this massive expansion into the great southwest and the Mexican Session which we'll take up actually next week?

还是1840年,在墨西哥战争的前夕,美国大举扩张进入,广阔的西南部地区及墨西哥会议的召开,这些其实我们下周都会讲到

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In 1840, Napoleon's remains were interred in Les Invalides in Paris, having been brought from St.

CNN: Sunday,

Ireland is perhaps the only geographic entity today in which the population is smaller than it was in 1840.

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Patarei, built as a sea fortress under Russian tsar Nicholas I in 1840, but served as a prison from 1920 to 2005.

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