If I could, I would, but I can't, so I shan't.

如果我可以，那么我愿意，但是我不能，所以我不会。

youdao

Thinking it was going to gnaw at the dead body, he drew his sword and exclaimed:" You shan't touch her so long as I am alive!"

想到蛇是来咬尸体的，他拔出宝剑说：“只要我还活着，你就别想碰她！”

youdao

I am afraid I shan't see Peter and his goats, if we have to go away so soon again.

如果我们不得不这么快就走，恐怕我就见不到彼得和他的山羊们了。

youdao