我真不知道该如何来感谢你的善意。

I don't know how to thank you for your kindness.

youdao

我不知道该如何感谢你。

I don't know how to thank you enough.

youdao

我都不知道该如何感谢你才好了。

I can't tell you how grateful I am.

youdao

我都不知道该如何感谢你才好了。

I can't tell you how grateful I am.

youdao