分析了煤矿电气保护现状，探讨了如何通过检测不同的电气物理量，来实现煤矿电气保护的完全选择性，保证安全用电和连续生产。

According to the present situation of coal mine electric protection, how to detect various physical phenomenon of electric and realize complete options of coal mine electric is probed.

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Towards semester's end you will have the opportunity to choose a project to work on, choose a project that is entirely of your own choice to execute.

接近学期结束时,你们将有机会选择一个项目来做,一个完全由你自己选择执行的项目。

哈佛公开课 - 计算机科学课程节选

But sometimes he had a tendency to pick people whom he liked a lot but were totally unqualified, military commanders who weren't very good.

但有时他倾向于选择,他很喜欢但完全不合格的人,例如不很得力的军事指挥者

耶鲁公开课 - 欧洲文明课程节选

I believe that thoroughly true" but at the same time nobody, no adult, no teenager, no child ever leaves and says, "I'm totally conceptually confused."

我相信这些全都是真的",但同时,无论大人,青少年还是孩子,没有人会选择中途离开,说,"我完全不知道电影在讲些什么"

耶鲁公开课 - 心理学导论课程节选