"in one fell swoop" in Chinese (Simplified)
一举一下子
Definition
一下子全部完成，而不是一步一步地做。
Usage Notes (Chinese (Simplified))
这个表达有些文学色彩，用于强调许多事情一下子发生，也可以强调突然的大变化。在正式和非正式场合均可用，但带有夸张或惊讶的语气。
Examples
All the trees were cut down in one fell swoop.
所有的树都**一下子**被砍倒了。
He deleted all his files in one fell swoop.
他**一下子**删除了所有文件。
We finished the work in one fell swoop.
我们**一下子**完成了工作。
They fired half the staff in one fell swoop and everyone was shocked.
他们**一下子**解雇了一半的员工，大家都很震惊。
If you pay off your loan in one fell swoop, you'll save a lot of interest.
如果你**一下子**还清贷款，你会省很多利息。
The company changed its policies in one fell swoop, and nobody had time to react.
公司**一下子**改变了政策，没人来得及反应。