I've already done it.

我已经完成了。

《牛津词典》

I've already done it. - You've done it alright?

我已经做过这样的比较了，-，你已经做了？

youdao

I've already discussed it with them and they're also keen to get this work done.

我已经和他们讨论过了，他们也很想完成这项工作。

youdao

I've already done it. - You've done it alright?

我已经做过这样的比较了，-，你已经做了？

普林斯顿公开课 - 人性课程节选