Knowledge is power - and power corrupts. So study hard turn out to be evil.

学问就是气力，气力会邪好转。那么就好好研习当大魔王吧！

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IGCT is a kind of high power semiconductor based on GTO structure, which achieves hard turn-off by the integrated gate circuit.

IGCT是一种基于GTO结构并利用集成门极电路进行硬驱动控制的大功率半导体开关器件。

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Ford almost bought the carmaker two years ago, but pulled out after finding that Daewoo would be too hard to turn round.

两年前，福特公司几乎购买了这家汽车制造厂，但发现很难使大宇汽车公司起死回生后知难而退。

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Let's turn to the next president who is gonna have a hard choice to make.

接下来我们谈谈下届总统选举的问题,这个不太容易搞定。

斯坦福公开课 - 经济学课程节选

but I'm kind of pushing things to the side. It's kind of hard to turn it off.

但我却会强迫性地去观察。而且很难停止。

旧金山的调酒师 - SpeakingMax英语口语达人

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

The NRA's hard turn to the right makes it highly unlikely that it will want to work with the White House on any measure.

CNN: Three areas where Biden and NRA can find common ground

For the most part, these parents did well enough through midlife to take on sizable loans, but some have since fallen on tough times because of the recession, health problems, job loss or lives that took a sudden hard turn.

FORBES: Move up http://i.forbesimg.com t Move down

"We are now working hard to turn the fairy tale into reality, " he says.

BBC: Euro 2012 sets Ukraine tough test