An argument can be either valid or invalid but not true or false.

论点可能有效或者无效，但是不能或真或假。

youdao

Often that will be the case because it's invalid but not always.

经常这样是因为他无效，但是不经常。

youdao

Often that will be the case because it's invalid but not always.

经常这样是因为他无效，但是不经常。

youdao