天主教会每天有七次祈祷，其中一次是在晚上，需要设置闹钟在黎明前叫醒僧侣。

The Catholic Church had its seven daily prayers, one of which was at night, requiring an alarm arrangement to waken monks before dawn.

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在该市的记者说，其中一次袭击发生在白天，导致阿齐齐亚军事基地周围的部分墙壁倒塌。

Correspondents in the city say the raids, one of them in daylight, caused the collapse of sections of the walls around the Bab al-Azizia military complex.

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“在其中一次会议中，我发现了我个人的偏见。”他回忆道。

"Through one of the sessions, I discovered my personal bias," he recalls.

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Socrates willingly giving up one of his conversations for the tedious business of legislation ? and public administration?

苏格拉底是否会愿意放弃,其中一次会话,只因要进行冗长乏味的立法,与公共行政？

耶鲁公开课 - 政治哲学导论课程节选

Could you tell us about how you prepared for one of your midterm exams?

你能和我们谈谈你是如何准备你其中一次的期中考试吗？

考试应该这么准备 - SpeakingMax英语口语达人

So, a natural product is something that is made by nature, and often natural products, whether it comes from a plant or a marine organism have some really good, useful properties. And so, one particular compound has anti-tumor properties. So, again, along this line of cancer research.

天然产物是在自然界中生成的,通常一个天然产物，不管是来自植物或者海洋生物,都有些非常好非常实用的性质，其中的一个特殊的化合物,可以治疗癌症,再一次我们又来到癌症研究上。

麻省理工公开课 - 化学原理课程节选