Concern about excessive Internet use isn't new.

对过度使用互联网后果的担忧已是老生常谈了。

youdao

Teachers have expressed concern about the changes.

教师对这些变化表示忧虑。

《牛津词典》

There is growing concern about violence on television.

人们对电视上充斥暴力内容的忧虑日益加重。

《牛津词典》

Another study found that almost half of American workers expressed concern about their ability to provide for immediate family needs.

VOA: special.2009.03.24

In an effort to get more to keep the economy from collapsing at a time when at a time of great concern about the structure of the financial system.

在一种得到更多的努力中,预防经济在一种时期中崩溃，这个时期是,人们都很担忧,金融系统的结构。

耶鲁公开课 - 金融市场课程节选

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

There was a lot of concern about Americans still on the ground potentially being held hostage.

WHITEHOUSE: Press Briefing

And at kitchen tables across our country, there is concern about our economic future.

NPR: Text of Bush's State of the Union Address

That report helped to lay to rest public concern about the much-trumpeted threat posed by EMFs.

FORBES: Should The FCC Re-Examine Cell Phone Radiation?