concern [kənˈsɜ:n]

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vt.（使）担忧；涉及；关系到；n.担心；关注；（利害）关系

to cause worry to someone

It's very kind of you to show so much concern for us. 谢谢您对我们这么关心。
Our losses are beginning to concern me. 我们的损失使我担心起来。