turn back

a) HELPto refuse to help, support, or be involved with someone or something 对（某人/某事）置之不理，对（某人/某事）撒手不管

How can you turn your back on your own mother?

你怎么可以对自己的母亲不闻不问呢？

In his twenties he turned his back on his Catholic faith.

他二十几岁时背弃了天主教的信仰。

b) TURNto turn so that your back is pointing towards someone or something, and you are not looking at them 转身背对〔某人或某物〕

Angrily, she turned her back on him.

她生气地转过身背对着他。

Examples from the Corpus

turn your back (on somebody/something)• He turned his back abruptly and walked away.• I handed him back that hundred dollars and turned my back and took him in.• Weaken, turn your back for a moment and it could be lost for good.• He would never turn his back on a fellow veteran.• He acknowledged his paternity when he could have easily turned his back on him and told him he was a servant.• So in the end I turned my back on it and walked away.• Kissinger said it was disgraceful that the United States had turned its back on one of her oldest and closest friends.• He turned his back on Shauna and walked to the window.• Many immigrants turn their back on the old ways.• Wiltshire's Social Services department has promised not to turn its back on the problem of alcoholics.

→ turn your back (on somebody/something) at turn1(1)

2 phrasal verbphr v

a) RETURNto go back in the direction you came from, or to make someone or something do this （使）折回，（使）掉转头

It’s getting late – maybe we should turn back.

天晚了，也许我们该返回了。

turn somebody/something ↔ back

The UN convoy was turned back at the border.

联合国车队在边境被拦了回来。

b) to return to doing something in the way it was done before 重新开始〔做某事〕

The people are turning back to natural resources to survive.

人们又在回归于依靠自然资源生存。

We’ve promised to help, and there’s no turning back (=you cannot change this)!