His erstwhile friends turned against him.

他先前的朋友转而与他作对。

《牛津词典》

Taking shelter under a tree from a midday cloudburst, he puffs on his bamboo water pipe and explains how the economics of tilapia have suddenly turned against him.

他正在树下躲避午后的一场短时暴雨，一边吸着竹质水烟袋，一边向我解释罗非鱼生意为什么一下子就开始难做了。

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The tide turned against him.

形势变得对他不利。

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But in the end, once Nixon's dirty tricksters started to be indicted, the public turned against him.

ECONOMIST: How long will they love him?

Brown's political fate was finally sealed when two groups that he had most favoured, students and blacks, turned against him.

ECONOMIST: American politics

Two years after backing the Conservatives in Britain, Murdoch now rails against the government that turned against him over phone-hacking.

CNN: Rupert's Twitter feed: 10 lessons from Planet Murdoch