不要问怎样才能攻克英语，问一下你为什么要攻克！

Ask not how to totally conquer English, ask why you want to conquer English!

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如今天花已被人类攻克，研究人员的这一新发现又给人们增添了攻克艾滋病的希望。

Now human smallpox has been overcome, the researchers gave the people of this new discovery adds the hope of capturing AIDS.

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What are the engineering problems to overcome to get that to work?

要想实现这项技术,我们要先攻克什么工程难题

耶鲁公开课 - 生物医学工程探索课程节选