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We need to explain it.

我们有必要解释一下。

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So we need to explain what a corporation is.

因此我们需要解释什么是股份公司。

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All of that means we need to explain why these folks do what they end up doing, and we have some hints, but of course we do not know with any certainty or any confidence.

综上所述,我们来想想为什么这些人,要背井离乡呢,我们有一些线索,但是我们并没有有力的证据

耶鲁公开课 - 古希腊历史简介课程节选

Is there some feature that the physicalist can't explain and so we need to appeal to something extra-physical to explain it?

是否存在物理主义者不能解释的这种特性,使得我们不得不诉诸于,某些超物理的东西来解释

耶鲁公开课 - 死亡课程节选

We need to add something else in order to explain what is going on in the Periodic Table.

我们需要引其他一些东西进来才能解释清楚,元素周期表中发生的这种现象。

麻省理工公开课 - 固态化学导论课程节选

What we need to realize and explain to the American people are three simple things.

CENTERFORSECURITYPOLICY: Seven years since 9/11

The scale of the problems of the past means that in the weeks and months ahead we will need to continue to explain what went wrong and what we are doing to fix things.

CNN: RBS CEO Hester: We can't afford to give up on banks

If you have questions about this, see the infographic (right) that Microsoft released to explain why we need Windows 7.

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