Is it yours for keeps or does he want it back?

这东西是永远属于你了，还是要还给他？

《牛津词典》

I'm in him for keeps.

我是吃定他了。

youdao

This time I am giving it to you for keeps.

这次我把它永远送给你了。

youdao

Ensure that whatever you gain now will be for keeps.

确保你现在所获得的一切永远不会失去。

youdao

Ensure that whatever you gain now will be for keeps.

确保你现在所获得的一切永远不会失去。

youdao