When the electrons drop back down, they emit light.

当电子回落时，它们就会发光。

It dropped back a bit when everyone stopped travelling.

在人们停止出游的那段时间里，臭虫数量有所下降。

His words died away to a murmur; he dropped back.

他的话音渐渐消失，变成了喃喃低语；他昏过去了。

Dropping back to the floor, Alleyway Peter dusted himself off.

小巷彼得回到地面，掸去身上的灰尘。

It then dropped back to a Category 3 before hitting land.

随后在登陆前降回三级。

They moved to within a whisker of $100 before dropping back.

随后一路上升至100美元才开始回落。

Mr. Bing was stunned. He dropped Arnie back onto the plate.

兵先生被惊呆了。他把阿妮放回盘子上。

After President Trump's remarks, they dropped back down to below $60.

在特朗普总统发表声明后，油价回落至每桶60美元以下。

I'm dropping the back of the tongue before creating the L sound.

在发 L 音之前，我把舌头后部放下。

A shuttle bus or taxi can drop you back at the Falls in no time.

搭乘接驳车或计程车返回尼加拉瀑布也相当便捷。