The muscular man is working hard to control a powerful drill that is cutting through the rock that surrounds him.

VOA: special.2009.03.23

These in turn control the hard drive's moving parts.

这些反过来控制硬盘的移动部分。

哈佛公开课 - 计算机科学课程节选

We respnded aggressively, very aggressively on a lot of different occasions, and it was the kind of crisis that is just hard to keep control of. Ultimately we did.

我们的应对措施很强势，非常强势,在很多情况下都是如此，这次危机是,很难控制的，但最终我们做到了。

普林斯顿公开课 - 国际座谈会课程节选

Not only are they hard to control, but it's hard to figure out whether they are worth controlling in the first place.

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The fact that certain transactions are hard to control does not mean that they should be made legal.

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Reviews leak out of early screenings and fans can be hard to control.

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