- relate to; be about涉及, 关于：
the story concerns a friend of mine
故事讲的是我的一个朋友
(be concerned with) the report is mainly concerned with 1984 onwards.
报告主要涉及自1984年开始的事。
- be relevant or important to; affect or involve与…有关; 关系到; 对…有重要性; 影响：
she was prying into that which did not concern her
她在打听与她无关的事
many thanks to all concerned.
谨向各界有关人士致谢。
be concerned
regard it as important or interesting to do something认为重要（或有趣）; 关心, 关切：I was mainly concerned with making something that children could enjoy.
我关心的主要是造出孩子们喜欢的东西来。
be concerned in
formal have a specific connection with or responsibility for〈正式〉与…有关系; 对…负有责任：those concerned in industry, academia, and government.
与工业界、学术界和政界有关系的人。
concern oneself with
interest or involve oneself in喜爱; 关心; 从事, 忙于：it is not necessary for us to concern ourselves with this point.
我们不必管这一点。
- worry (someone); make anxious使担忧, 使烦恼, 使不安：
the roof of the barn concerns me because eventually it will fall in
谷仓的顶让我担忧, 因为它终究会塌下来
'Don't concern yourself, old boy - my lips are sealed'
“别担心, 老伙计, 我的嘴很严”
- mass noun anxiety; worry担心; 忧虑; 烦恼：
such unsatisfactory work gives cause for concern.
如此难以令人满意的工作引起了忧虑。
- count noun a cause of anxiety or worry忧虑（或烦恼）的原因：
environmental concerns.
环境问题。
- a matter of interest or importance to someone关注的事; 关系重大的事; 关心之事：
housing is the concern of the Housing Executive
住房问题是房屋管理局应该关心的事
mass noun the prospect should be of concern to us all.未来的情况如何应是我们大家都关心的事。
concerns
affairs; issues事务; 问题：public awareness of Aboriginal concerns.
公众对土著问题的了解。
- a business; a firm商行; 企业; 公司。
- informal, dated a complicated or awkward object or structure〈非正式, 旧〉复杂（或使用不便）的物体（或建筑、结构）。
as （或so） far as - is concerned
- as regards the interests or case of -至于; 就…而言：
the measures are irrelevant as far as inflation is concerned.
就通货膨胀而言, 这些措施无关紧要。
have no concern with
- formal have nothing to do with〈正式〉与…无关：
drama seemed to have no concern with 'truth' at all.
戏剧似乎与“事实”毫无关系。
to whom it may concern
- a formula placed at the beginning of a letter, notice, or testimonial when the identity of the reader or readers is unknown敬启者（读者身份不明时用在信件、通知和证明书开头的套语）。