1，adj.,担心的；忧虑的The president is deeply concerned about this issue.总统对这个问题深感担忧。

2. 感兴趣的；关切的They were concerned with how the other women had dressed than with what the speaker was saying.他们对其他女人的衣着打扮比对演讲者的讲话更感兴趣。

3，来自于concern关于 be aboutThe book is primarily concerned with Soviet-American relations during the Cold War.