Once an opportunity slips away, it has gone for good and ever.

机会一旦错过，永远不会再来。

youdao

The troublemaker has gone for good. I regretted that I had lost my temper. They will have finished by the time we arrive.

那捣蛋鬼已走上了正路。我对我曾大发脾气感到后悔。他们会在我们到那里的时候完成的。

youdao

If the victim has also deleted the distressing E-mail, the evidence may be gone for good.

如果受害者也删除了受到的骚扰邮件的话，证据也就可能永远地消失了。

youdao

There will surely be a significant impact if it has gone for good.

ECONOMIST: The economic impact of high oil prices

If the victim has also deleted the distressing e-mail, the evidence may be gone for good.

ECONOMIST: The internet allows the malicious to menace their victims

The trademark four-day stubble has gone for now "hopefully it'll grow back in time for the match, it's a good look!"

BBC: There's a Will for England's new breed