详细解释:a. 关心的, 有关的, 参与的, 担心的
相关词组:
be concerned with
be extremely concerned over sth
be concerned in sth
as far as I'm concerned
be concerned about
be concerned at
英语解释：
动词 concern:
have to do with or be relevant to同义词：refer, pertain, relate, concern, come to, bear on, touch, touch on