Cell phones foster social connections with peers across time and space.

手机促进了人与人之间跨越时间和空间的社交联系。

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The answer is that only a small subset of the genes in a particular kind of cell are expressed, or turned on, at a given time.

答案是特定细胞中只有一小部分基因在特定的时间被表达或使用。

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He said the Octagon would soon switch to a fuel cell system for heat and electricity, partly to cut energy costs at a time of a depressed rental market.

他说奥特根不久将使用燃料电池系统供热和发电，以便在楼房租赁市场低迷的情况下部分地降低能耗。

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Cells can stop in their lifetime at some point in the cell cycle and persist for long periods of time.

细胞生命期可以停止在细胞周期的某个点,并保持很长时间

耶鲁公开课 - 生物医学工程探索课程节选

So, this pathway might not be the only one that's being activated inside the cell at any given time.

因此,任一时刻细胞内,激活的信号通路不只是一条

耶鲁公开课 - 生物医学工程探索课程节选

And the nucleus name was used as an analogy to the nucleus of a cell so in some ways that makes it easier to see the connection but I think it can also be a little bit confusing for maybe 7th graders that are learning both at the same time, that this nucleus acts very different from a nucleus in a cell, although, of course, there many of them in the nucleus of a cell.

原子核这个名字的命名,是类似于细胞核,这样会让人们更容易看到两者之间的联系,但我觉得这样可能,会给正在学这两个课程的,7年级学生带来困惑，原子核的行为,和细胞核完全不同，虽然在细胞核。

麻省理工公开课 - 化学原理课程节选

This is because the ends of chromosomes, structures called telomeres, shorten each time the cell divides.

ECONOMIST: The latest from the wacky world of anti-senescence therapy

Every time a cell divides, its telomeres get shorter.

ECONOMIST: Ageing

With all the news about the lost or stolen iPhone 4g, I thought it might be a good time to take a ride in the Cell Phone Time Machine.

FORBES: Cell Phone Time Machine