超级生动实用的短语turn your back on sb/sth

turn your back on sb/sth

1

转身背对某人（或某物）

to move so that you are standing or sitting with your back facing sb/sth

When on stage, try not to turn your back on the audience.

在舞台上尽量不要背对观众。

2

背弃；抛弃

to reject sb/sth that you have previously been connected with

She turned her back on them when they needed her.

他们需要她的时候，她却背弃了他们。