Can't learn an old dog new tricks, as the saying is.

俗话说得好，老狗学不了新把戏。

youdao

You can't teach an old dog new tricks .

你很难使因循守旧的人接受新事物。

youdao

You can never teach an old dog new tricks.

你不能使守旧的人接受新事物。

youdao

Yet,some people say that you can never teach an old dog new tricks.

VOA: special.2010.05.30

Young animals grow up and Chamber's not old, but you can, we can, teach that old dog new tricks.

FORBES: Business Out Front

But in May 1999, Mr Yeltsin proved that the old dog, while too feeble to learn new tricks, could still employ tried and tested ones.

ECONOMIST: Russia’s flawed reformer | The