When they detect an extended dry period, they divert their metabolisms, producing sugars and certain stress-associated proteins and other materials in their tissues.

当它们发现干旱期延长时，它们会改变自己的新陈代谢，在它们的组织中产生糖和某些与应激相关的蛋白质和其他物质。

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Regardless of what social media people use, one thing is certain: we are in a period of accelerating change.

不管人们使用什么社交媒体，有一件事是肯定的：我们正处在一个加速变革的时期。

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The arrival of a letter will be followed by two others within a certain period.

收到一封信后，在一定的时间内会收到另外两封信。

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"And what happens is we have mazes and the children are able to organize the robots and see if they can get them through the maze within a certain time period."

VOA: special.2010.07.28

It began to infiltrate other disciplines and was in general a high-spirited horse for that certain period of time.

它逐渐渗入到其它学科,总之是那个时代的一匹黑马。

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They believe that there's a decent chance that they will die within a certain period of time.

他们相信自己在一段特定的时间后,有可能死亡。

耶鲁公开课 - 死亡课程节选

The study compared and contrasted 11 companies that made the transition from good to great, and 11 peer companies that did not over a time period certain as judged by growth in stock returns.

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Pre-liberalization, domestic insurers focused on high-income endowment policies (which pay a lump sum after a certain period).

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"If a player is out for a certain period there is no point rushing it, " said Ferguson.

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