No, OK and that's correct, because each photon of light actually has more energy than is needed to eject an electron.

没有，好，对了，因为每一个光子实际上,都有更多的能量去逐出一个电子。

麻省理工公开课 - 化学原理课程节选

Before that no word was needed because there was no such thing.

在此之前,没有这个词,因为这是前所未有的

耶鲁公开课 - 古希腊历史简介课程节选

No limits on how much you needed it.

你可尽情利用这些资源。

哈佛公开课 - 幸福课课程节选

Such states, of course, did not need a bureaucracy for there were no vast royal or state holdings that needed management and not much economic surplus to support a bureaucratic class.

国家无需官僚体制,因为没有庞大的皇室家族,和国家财富需要管理,也没多少经济盈余能够维持官僚阶级

耶鲁公开课 - 古希腊历史简介课程节选