一不做 meaning in English

as well be hanged for a sheeas for a lamb

You can't be hung any more for a sheep than you can for a lamb .
这就是一不做，二不休。
In for a penny , in for a pound
做事一开头，就要做到底；一不做，二不休。
It was one of those do or die moments filled with raw , unbridled emotion , but no convincing answer came
那正是我一不做，二不休，充满情绪的时刻，但还是没有得到一个可以说服我的答案。
Fix , seeing that he must , at all hazards , be separated from his master , wished to entirely overcome him
费克斯认为现在必须不惜任何代价把路路通和他的主人隔离开。他决定一不做，二不休。