She thinks she knows what she's talking about, but the fact of the matter is, she's wrong.她认为她知道自己在说什么，但事实上，她错了。

The budget is very tight this year. The fact of the matter is, we may have to lay off a few employees.今年的预算很紧张。实际情况是我们可能不得不解雇一些员工。