Doctors I came into contact with voiced their concern.

我打过交道的医生们表达了他们的关注。

《柯林斯英汉双解大词典》

I didn't concern myself with politics.

我不关心政治。

《柯林斯英汉双解大词典》

"I appreciate your concern for my feelings," Bess said huffily, "but I'm a big girl now."

“多谢你关心我的感受，”贝丝气鼓鼓地说，“但我现在已经是个大女孩了。”

《柯林斯英汉双解大词典》

In my concern for his sister,I had completely forgotten him.

VOA: special.2009.02.14

I'm concern about our safety "Maybe we should go some place else."

我觉得这儿不安全，“要不然换个地方吧。”

Let's 课堂 - SpeakingMax英语口语达人

So, if I wanted to cause you to feel moral concern for a fetus, I would do well to describe it as a pre-born child.

所以如果我想你对胎儿产生道德关怀，我最好就称它为未出生的婴儿。

耶鲁公开课 - 心理学导论课程节选

And I guess the main concern I have about the future of Wall Street is that I just hope that the United States has learned some lessons.

FORBES: Intelligent Investing Panel

As I said, the one concern I've got on the stimulus package in terms of the debate and listening to some of what's been said in Congress is that there seems to be a set of folks who -- I don't doubt their sincerity -- who just believe that we should do nothing.

WHITEHOUSE: Presidential Press Conference

Mr. CHEN: Well, as I am a teacher, I do concern about our education situation.

NPR: Chengdu Youths Discuss Life in China