A flash mob is a group of people who come together suddenly in a public place, do something unusual for a short period of time, and then quickly break up.
快闪族，是指一群人突然在公共场所聚集，在短时间内做一些不寻常的事情，然后迅速散开。
It only matters if youshoot in the dark, and then shoot without flash.
它只有你在暗光下拍摄并且不适用闪光灯时才会重要。
We see a momentary flash, and then the field is blank.
我们看到一个瞬时的闪烁，然后，视野中便是一片空白。
It only matters if you shoot in the dark, and then shoot without flash.
它只有你在暗光下拍摄并且不适用闪光灯时才会重要。
Can I just flash a little worried, and then fleeting.
可我只是闪过一点担心，随后稍纵即逝。
The lightning flash lasted a split second, and then disappeared.
闪电一闪而后就消失了。
The lightning flash lasted a split second, and then disappeared.
闪电一闪而后就消失了。
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