"the safety of the ship is the captain's concern"
"care had aged him"
"they hushed it up out of fear of public reaction"
"She felt strong concern for those less fortunate"
"New York traffic is a constant concern"
"it's a major worry"
"he bought his brother's business"
"a small mom-and-pop business"
"a racially integrated business concern"
"There were lots of questions referring to her talk"
"My remark pertained to your earlier comments"
"I worry about the second Germanic consonant shift"
concerned adj. 有关（方面），被牵连的;担心的，烦恼的;关心政治的，关心社会的; vt. 涉及;关心;参与，卷入;使担忧; vi. 有关，利害关系;顾虑;装置;
concerning prep. （表示论及）关于，就…而论; v. “concern”的现在分词;涉及;关心;顾虑，忧虑;
concernment n. 重要，参与，挂念;
unconcern n. 不关心，不感兴趣，冷漠;
book concern n. 出版社;
with concern 关切地;
concern with 与…有关;关心…;
self-concern n. 自私自利;
feel concern about 忧虑，挂念;
have no concern for 毫不关心;
going concern theory 继续营业原理;
have no concern with 同…无关;
going concern concept 继续经营概念;
of no concern 无关紧要，没有意义;
have a concern in 和…有利害关系;
gone-concern [经] 即将歇业企业，停止营业的公司;
commercial concern [经] 商店，贸易公司;
manufacturing concern [经] 制造企业;
paying concern [经] 有收益的事业;
elementary concern 初步关注;
going concern 继续营业，盈利商行，经营发达的企业;
merchandising concern [经] 商业企业;
trading concern 贸易商号;