You must know that pools are expensive to build, and they usually take several years to complete.

你必须知道建造游泳池是很昂贵的，而且通常需要几年的时间来完成。

youdao

You must know that, in the storm which swamped my boat, a large ship also suffered the same fate.

你一定知道，在这场淹没了我的小船的风暴中，一艘大船也遭受了同样的命运。

youdao

You must know that we have parents.

你们应当知道，我们是有双亲的人。

youdao

I know there is a longer journey that must be traveled to overcome decades of mistrust.

VOA: standard.2009.04.17

dS/dV And that, now, we know must equal dS/dV, with a positive sign. At constant temperature.

我们知道这个等于恒定温度下的，符号为正。

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So putting that all together, I know that it must go through here again, and once again, i get a straight line.

把这些点连在一起,我知道它一定会经过这一点,这次我们又画出了一条直线

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So he must know that only a handful of growth stocks, decade after decade, are repeaters.

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So he must know that, decade by decade, only a handful of growth stocks are repeaters.

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Each must know that what they are saying is done in the best interest of the enterprise.

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