Most parents do not worry about a daughter till she fail to show up for breakfast, and then it's too late.

许多父母，直至女儿到早饭时也不露面为止，都不关心女儿的事情，到其时，已经为时过晚矣。

youdao

Sometimes you don't know you've crossed a line until you're already on the other side. Of course, by then it's too late.

有时候直到已经到达了另一边，你才知道自己过了界。当然，那时为时已晚。

youdao

When they're in a better mood, when everything goes better, of course they'll come around. But then it's too late. Then it is not love anymore. It's just a need for each other.

当然他们会，当他们心情比较好，当事情比较顺利之后，他们当然会回到你身边来，只不过那时就太迟了，就不再是爱了，只是彼此需要而已，那是不一样的！

youdao

So you're clobbering the value of X and then you can't get back X's value because it's too late.

所以你们清除了X的值,然后你们不能找回X的值了，因为太晚了。

哈佛公开课 - 计算机科学课程节选

By then, it's too late for poor Lisa Gorn, whose existence has been eradicated altogether.

NPR: Digging Up the Past, in More Ways Than One

And we must realize that begun, this primary season, there is a general election and if we don't begin to focus early, then it's almost too late to get into the game for the general, and have a possibility of winning it.

NPR: Pastor: Clinton, Obama Should Focus on White Male Vote

The National Front was ended in 1974 after Pastrana senior's administration, but by then it was too late.

BBC: Analysis: New order in Colombia's politics