Metaphor was an important means of expressing time in Chinese.

隐喻是汉语中时间表达的重要手段。

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The manner expressing time in Chinese has two: by lexical form or by grammatical form; they have different degrees of grammaticalization.

汉语表达时间的方式有词汇形式、语法形式，各种形式的语法化程度不一样；

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There are multiple mechanisms that a cell can use to decide which genes it is expressing at any one time and which ones are not expressed.

在某一时刻,决定细胞中哪些基因表达,哪些基因不表达的机理十分复杂

耶鲁公开课 - 生物医学工程探索课程节选

But they still have an incredibly difficult time expressing themselves in the workplace.

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But perhaps the best reaction came from ordinary Arabs and Muslims plugged into their social media and expressing in real time how they feel about the message and its messenger.

CNN: Obama draws questions, praise from Muslims

And so my work is really just expressing that all the time.

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