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一丸即可净化一升水。

One tablet will purify a litre of water.

《牛津词典》

在此前的推测中，每一升海水中可能会有大约10万个微生物细胞，但现在科学家们认为有可能达到10亿个。

Previously it was thought there were around 100, 000 microbial cells in every litre of seawater but scientists now think there could be one billion.

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One of the things about Princeton is that in your senior year,

普林斯顿有这么一桩事，你升上大三之后，

我尊敬的教授 - SpeakingMax英语口语达人

He brings his opening note, that F-sharp, in a beat early.

他把他的起始音,升F,提前一拍

耶鲁公开课 - 聆听音乐课程节选