So, the take-home message is whether you have three photons or 3,000,000 photons that you're shooting at your metal, if you're not at that minimum frequency or that minimum energy that you need, nothing is going to happen.

所以，这里表明的信息是,无论是向金属发射3个光子,还是300万个光子,如果没有达到所需的最低频率,或者最小能量,什么事情都不会发生。

麻省理工公开课 - 化学原理课程节选

It's like a moveable feast; you put your explosion where you need it at any particular moment.

它就像一个万能贴,你可以把火山爆发,置于你所需要的特定时刻

耶鲁公开课 - 古希腊历史简介课程节选

Not because you necessarily need it at the moment but your brain tells you you may need it later and so eat, eat, eat becomes the priority.

并不是因为当时真的需要,但你的大脑告诉你,你以后可能会需要,所以吃吧,先吃了再说

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选