科学家们还不清楚这个过程是如何阻止冰晶形成的。

Scientists do not know exactly how this process prevents ice crystal formation.

youdao

一个人，仅仅一个人，如何阻止得了？

How could just one man stop it?

youdao

我该如何阻止他们？

How do I stop them?

youdao

It was a subject of much discussion of what to do to prevent these bank runs.

这是一个需要很多关于如何做才能,阻止这种银行倒塌的探讨的话题。

耶鲁公开课 - 金融市场课程节选

What would stop it would be- why didn't they flank each other?

如何阻止,他们为什么不互相侧翼包抄

耶鲁公开课 - 古希腊历史简介课程节选