:to start to talk or think about something开始谈论；开始考虑 — usually used in negative statements通常用于否定句
“Do you remember when we were dating?” “Let's not go there.” = “I don't want to go there.” = “Don't go there.” [=I don't want to talk about that]“你还记得我们是什么时候开始约会的吗？”“我不想谈这个。”