你们叫做地球的这个地方，正在经历着一场你们已经清楚意识到的变动。
This place you call Earth is going through a change that you are well aware of.
这场运动来得正是时候，美国正需要这样一场变动。
The campaign came at a time when America needed such a jolt .
有人形容二十一世纪的生物科技是一场在未知的、变动的领域中旅行。
Biotechnology is the science of the twenty-first century-a journey into undiscovered and constantly evolving territory.
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