You can't teach an old dog new tricks.

年老难学艺啊。

Also, we " can't teach an old dog new tricks" .

还有，我们“年老难学艺”。

That expression is: You can't teach an old dog new tricks.

老狗学不了新把戏（积习难改）。

Maybe that's way we say, " You can't teach an old dog new tricks."

“老狗学不了新把戏（you can't teach an old dog new tricks）。”

Then the axiom: You can't teach an old dog new tricks' doesn't work any longer.

那就是说“老狗学不了新戏”不对。

I'm sure you all know the saying, You can't teach an old dog new tricks.

我相信你们都知道这句俗语，“你无法改变老人的想法。”

I think this is best summarized by the quote: " You can't teach an old dog new tricks."

“你不能教老狗学新把戏。”

You can't teach an old dog new tricks.

鲍里斯：你不能教老狗新把戏。

You CAN teach an old dog new tricks!

你可以教老狗新把戏！

We have a saying in English you can't teach an old dog new tricks.

我们有一句英语谚语，老狗学不会新把戏。

So we use the English phrase you can't teach an old dog new tricks.

所以我们使用英语短语 you can't teach an old dog new tricks。

It's not just teaching an old dog new tricks.It's teaching an entitled dog new tricks.

这不只是在教老狗学新把戏 而是在教经验丰富的狗学新把戏。