There's nothing you need to do. You didn't do anything wrong.

VOA: standard.other

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

So, basically what he's saying here is we pretty much understand what's going on there's nothing new to really discover, all we need to do is measure things more precisely.

他的意思也就是说,我们对世界上的所有事情,都很了解了，没有什么新的东西尚待发现的,我们剩下要做的就是。

麻省理工公开课 - 化学原理课程节选

It's very clear you don't need a force if something is doing nothing, just sitting there.

显而易见,如果物体没有运动,只是静止状态,那是不需要力的

耶鲁公开课 - 基础物理课程节选

This is nothing that we need to worry in our food supply.

我们一点都不需要担心食品供应的问题。

麻省理工公开课 - 化学原理课程节选