VERB
(因惱怒、擔(dān)心、困惑、全神貫注等而)皺眉，蹙額
When someone frowns, their eyebrows become drawn together, because they are annoyed, worried, or puzzled, or because they are concentrating.
例句
Nancy shook her head, frowning...
南希搖了搖頭，皺著眉頭。
He frowned at her anxiously.
他不安地朝她皺了皺眉。