Rest is a vital and essential process that decreases wear and tear on the mind and body.

休息是减少我们思想和身体耗损和痛苦的一个至关重要和必不可少的过程。

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Priority is given to ensure that essential medicines, rehydration salts, intra-venous fluids and other vital items are available where needed.

当务之急是确保在需要时提供基本药物、补盐液、静脉注射液和其它不可获缺的药品。

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It propels blood through vessels to each part of the body, delivering oxygen and other nutrients essential for normal function. The heart is vital because it.

它推动血液顺着血管流至身体各部位，并运载氧和必不可少的维持身体正常机能的营养素。

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Well, if--as with a real highway--it destroys something irreplaceable, a vital ecosystem essential to human life.

FORBES: Medialand

And I think we have also made clear that the cooperation we do get is vital and essential to our war against terrorism and terrorists.

WHITEHOUSE: Press Briefing

And while it is of course important to know your most valuable and loyal customers, it is significantly more vital and essential to know who they are in the first place.

FORBES: Forget About Big Data, Some Marketers Don't Even Collect Name And Address