frown是什么意思？用法有哪些？

　　“

　　Life always offers you a second chance. It’s called tomorrow.

　　人生总有第二机会，它叫明天。

　　”

　　fromn  verb

　　[fra?n]

　　look angry or sullen, wrinkle one's forehead, as if to signal disapproval

　　皱眉

　　例句：

　　He frowned at her anxiously.

　　他不安地朝她皱了皱眉。