[transitive] (often be concerned) to affect sb; to involve sb影响，牵涉（某人）◆The matter doesn't concern us.这件事不会影响我们。◆The closure of the firm was upsetting to all concerned (= everyone involved).关闭公司对与此有关的各方来说都是一件令人沮丧的事。 (also be concerned with sth) to be about sth涉及（某事）；与…有关◆The report's criticism concerns the way the company manages its pension fund.报告批评了这公司管理养老基金的方式。 ●To whom it may concern … (only used in written English 只用于书面英语) used, for example, at the beginning of a public notice or of a job reference, when you do not know the name of the person you are writing to敬启者