单词可以是fact，意思是事实，例如：

1、The theory seems to have no basis in fact.这一理论似乎没有事实根据。

2、The fact is we don't have enough money.事实是我们没有那么多钱。

3、He called attention to the fact that many files were missing.他提请注意许多档案已经遗失这一事实。