talk down to someone
phrasal verb with talk verb [ I ] uk/tɔːk/ us/tɑːk/
以居高临下的语气对（某人）说话
to talk to someone as if they are less intelligent than you or not important
I wish politicians wouldn't talk down to us as if we were idiots. 我希望政客们不要以那种居高临下的语气跟我们讲话，好像我们都是白痴似的。