While bullying is parents' greatest concern over all, nearly half of low-income parents worry their child will get shot, compared with one-fifth of high-income parents.

尽管欺凌是父母最担心的事情，但近一半的低收入父母担心他们的孩子会被枪杀，而高收入父母中只有五分之一的人担心这样的问题。

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The report expressed concern over continuing high unemployment.

报告表达了对失业率居高不下的忧虑。

《牛津词典》

There is growing concern over the safety of the missing teenager.

人们对这个失踪少年的安全越来越担心。

《牛津词典》

He also expressed concern over reports of rebels shooting those trying to flee to safety.

VOA: special.2009.05.16

Following a transformation the study of which is not the concern of the social sciences but rather of biology and psychology, a crossing over came about from a stage where nothing had a meaning to another where everything possessed it.

这门学科并不属社会科学的范畴,而是属于生物学，心理学，此种转变是一种跨越，从一个什么都没有意义的时代到,一个每样东西都能表达的时代的。

耶鲁公开课 - 文学理论导论课程节选

He expressed President Obama's deep concern over the continued presence of Sudanese forces in Abyei.

VOA: special.2011.06.04

Guy Houston quit as Transport Scotland's finance chief after concern over his shares in First Group.

BBC: MSPs 'thwarted' in rail row probe

Last year a government-commissioned report raised concern over primary pupils' performance in the subject.

BBC: Science qualification call for new primary teachers

One of the students, Ravinder Kumar, said there was concern over the impact on their studies.

BBC: Bilston Community college loses foreign student licence