一了百了-----get it over and done with

例句：

A: How can I deal with the problem?

我如何处理该问题？

B: Yon may get it over and done with lest there(should) be any effect.

你可以将它一了百了，以免留下任何后遗症。

同义词：

once and for all

注释：

deal with 处理

get over 解决