及物动词
1. 关系到；影响,涉及(某人的)利害.
The matter concerns the safe operation of the vehicle.
2. 使关心 (with),担心,挂念,忧虑 (for, about, over) (参看 concerned).
Don't concern yourself with this trivial matter.
He is very concerned about his mother's health.
名词
1. 关系；利害关系.
This incident is a concern of every citizen.
2. 关心,挂念,担心.
The concern is that the damage to the car cannot be repaired.
3. 商行,公司；财团；康采恩；事业,业务；(pl.)事件,事情.
John's new business is a going concern.