He looks like he's got an axe to grind. Better have a talk with him.

他看来是牢骚满腹，你最好找他谈谈。

《新英汉大辞典》

I can say with certainty that he is a fair man who has no axe to grind over this matter.

我可以肯定地说，他在这个问题上是一个没有个人打算的好人。

youdao

A cunning psychopath with more than an axe to grind murders the kindly mailman in a small, placid suburban town.

一个宁静的海滨郊区小镇，狡猾的精神病患者用斧头将一位好心的邮递员残忍的杀害。

youdao

Because it was always a policy and initiative list, there were many government officials involved, each with a policy axe to grind, weighing in, and the speechwriter was caught in the middle trying to make the words cover everything and still transmit a good speech.

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But it is a document, a big, fat document, that means you, I, charities, other governments, opponents, supporters, patients, teachers, parents, anyone with an axe to grind or a point to make can check whether what the government is doing is helping solve Wales' problems, or whether their intervention is having little or no, effect.

BBC: My big, fat Welsh annual report.

The stations owned by large chains, with no particular political axe to grind and potentially a lot to lose in Washington, will almost certainly carry the test.

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