to drop the subject 打断话题

英文释义

To cease discussion of a particular topic, usually because it is unpleasant.

例句

My friend got so angry when I started talking about the job he lost last month that I knew I should drop the subject immediately.

当我开始谈到我的朋友上月丢掉的工作时，我的朋友变得特别生气，我明白，我得赶紧打住。