concern/kən'sɜːn $ -'sɜːrn/

n.

➊ a feeling of worry about sth important

➋ sth that you feel worried about or care about

v.

➊ worry sb

➋ be important to sb or affect sb

n.

➊ [C; U] 担心，忧虑：[concern about sth] They have expressed concern about air pollution. 他们表达了对空气污染的担忧。

➋ [C] 担忧的事；关心的事：His main concern is to develop his company. 他最关心的是他公司的发展。

v. [T]

➊ 使担忧：Violence in the city concerns the mayor. 该市的暴力令市长担忧。

➋ 与…有关系，涉及：The problem concerns us all. 这个问题与我们大家都有关。

be concerned about（或for）sb/sth 担忧；关注；关心：The president is deeply concerned about the economy. 总统对经济深感忧虑。

构词con (= com-) + cern