There is an exception to this grammatical rule.

这条语法规则有个例外。

youdao

This is always executed even if there is an exception.

这行命令总在执行，即使出现异常也是一样。

youdao

There is an exception when you are dealing with a multi-thread application.

当您在处理多线程程序时，还有一个例外。

youdao

The exception is right there. It's an index error, that is it's trying to do something going beyond the range of what this thing could deal with.

但他事实上抛出一个异常，异常就在这里，这是一个下标错误,它是试图去取超出范围的元素造成的。

麻省理工公开课 - 计算机科学及编程导论课程节选

And this is an exception, but there were quite a few of those exceptions.

有例外，但也只有很少例外。

哈佛公开课 - 幸福课课程节选

Moreover, there is an exception to the general rule that Democrats did badly among white men.

ECONOMIST: The Democrats

There is an exception for 2010 decedents because an executor can opt out of the estate tax.

FORBES: Pssst. Don't Tell The IRS. It's Spring And The Estate Tax Has Been Reinstated

There is an exception to this general rule, and that is when the 401(k) offers matching contributions.

FORBES: When Not to Invest in Your 401(k)