NASA plans to test a full-size solar sail for chemical-free propulsion and a deep space atomic clock.

此外，美国国家航空航天局（下文简称NASA）还计划测试一个完整尺寸的太阳帆，为航天器提供绿色推进能源，以及测试一个深空原子钟。

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University of California, Irvine researchers have identified the chemical switch that triggers the genetic mechanism regulating our internal body clock.

加州大学欧文分校的研究人员找出了调节我们内部的生物钟遗传机制化学触发开关。

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By changing that chemical balance, the clock of aging can be reset.

人体衰老的时钟可以通过改变这种化学平衡予以重新设置。

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In his book, Make It In America: The Case for Re-Inventing the Economy, Dow Chemical Company CEO Andrew Liveris calls us to turn back the clock and return to a time when America was defined by the things it built.

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