I'm determined to marry Jane, by fair means or foul.

我下定决心要不择手段娶到阿珍。

I am to get it back by fair means or foul.

我要不择手段地把它取回来。

They fostered their foster child by fair means or foul.

他们用正当或不正当的手段来养育养子。

A meddlesome mechanic meddled with his study by fair means or foul.

一名好干涉的会技工不择手段地干涉他的学习。

So if they are allowed to come to office, they will very likely do their damnedest to cement their power by fair means or foul.

所以一旦他们当权，他们极有可能竭尽全力乃至不择手段地巩固既得政权。

I understand the cause of your delays; you are lying in wait; you are the diamond hunter, forsooth; and sooner or later, by fair means or foul, you'll lay your hands upon it.

我明白你延误的原因； 你在埋伏； 毫无疑问，您是钻石猎人； 迟早，你会以公平或不正当的方式得到它。