“一劳永逸”，汉语成语，意思是辛苦一次，把事情办好，以后就不再费事了。可以翻译为“get something done once and for all”等。

例句：

一劳永逸的解决办法

Solution that holds good for all time

自己买个印刷机，才是一劳永逸的办法。

To buy a press of our own is the only way to get rid of trouble once and for all.