时光不会倒流，效率就意味着生命。

One can not put back the clock. Efficiency means life or death.

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艾伦。旁派说：“我更加佩服医生了，以前没有想到医生总在疲劳和压力下工作，一旦疏忽意味着生命的结束。”

"I certainly have more respect for doctors than before," says Ellen Pompeo. "I didn't realize the fatigue and pressure that most of them are working under all the time."

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让我们回到主题，有水就意味着生命。天文学家们相信，如果木卫四上确有海洋的存在，那么它便很有可能存在着复杂的生命。

In keeping with the theme that water might equal life, astronomers believe that if such an ocean exists on Callisto, it's possible that complex life might also be in it.

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On the one hand, we have these unalienable rights to life, liberty, and property, which means that even we don't have the power to give them up, and that's what creates the limits on legitimate government.

一方面，我们有不可剥夺的生命，自由和财产权，这意味着即使我们自己也无权放弃，正是这些权利，造成了对合法政府的限制。

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