Perfect courage is to do without witnesses what one coulg be capable of doing with the world looking on.

完美的勇敢是无人在场的情况下做出一个人在全世界的瞩目中所能做到的。

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If we want to have informed, reasoning, responsible citizens we must teach young people not only what they need to know, but also help them develop the skills they need to be capable of doing.

如果我们需要见多识广、善于推理和负责任的公民，我们不但需要教育青年人知道他们需要知道的知识，而且需要帮助他们开发他们做事所需要的技能。

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What does a BIG company have to be capable of doing?

一个大的公司需要具备哪些能力？

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Moreover, the device needed to be capable of doing all this while inside buildings and vehicles.

ECONOMIST: Monitor

And there are doubts about whether they will ever be capable of doing that.

CNN: Robot teachers invade South Korean classrooms

And there's the question of what Syria would be capable of doing.

NPR: Defining Syria's Role in Mideast Peace