youdao

它只有你在暗光下拍摄并且不适用闪光灯时才会重要。

It only matters if youshoot in the dark, and then shoot without flash.

youdao

TTL可以用在绝大多数情况下，包括相机手动模式、户外，甚至跳灯时。

TTL can be used in just about every shooting situation including shooting in your camera's manual mode, outdoors, and even when using bounce techniques.

youdao

So if we think about the work function for zinc, and the work function for zinc is 6.9 times 10 to the -19 joules, do we expect that when we shine our UV light on the zinc, we'll be able to eject electrons?

如果我们考虑锌的功函数,它是6，9乘以10的-19次方焦耳，我们是否可以预测当,用紫外灯照射锌时，我们可以射出电子呢？

麻省理工公开课 - 化学原理课程节选