我不想再谈论这件事了——我们放下这个话题吧。

I don't want to talk about it any more - let's ___drop ___the ___subject.

他不断提起过去，所以我让他别再提了。

He kept bringing up the past, so I asked him to ___drop ___it.

如果这让你不舒服，我们可以不谈这个。

If it makes you uncomfortable, we can ___drop ___the ___subject.