abruptly

The sky darkened abruptly.

天突然变暗了。

One had to quit abruptly on a given day, going from about a pack a day to zero.

一组（成员）必须在某一天突然戒烟，从一天一包烟减到一天零包。

Then, abruptly, the cod population collapsed.

然后，突然之间，鳕鱼数量就骤减了。

"Good night, then," she said abruptly.

“那么，晚安”，她唐突地说道。

The mountain dropped off abruptly.

山势陡然而下。

Its sheer rock sides sweep up from a broad base until they cut off abruptly at the flat summit.

它陡峭的岩石从一个宽阔的底座向上延伸，直到在平坦的山顶突然切断。