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

VOA: special.2011.06.04

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

With so much concern over the swine flu, it is hard to believe anyone would want to get it on purpose.

VOA: standard.2009.12.18

She said those include a lack of recognition of the deep concern over Iran's intention to continue enriching some uranium to high levels.

VOA: standard.2010.05.25

Both sides are expressing concern over North Korean statements on Friday that Pyongyang is continuing to extract plutonium from spent nuclear fuel for material useable in weapons.

VOA: standard.2009.09.06

The resolution expresses the General Assembly's "grave concern" over the recent trial, conviction and sentencing of pro-democracy leader Aung San Suu Kyi and her return to house arrest.

VOA: standard.2009.11.20

We believe that her detention over so many years is baseless and not funded on any concern other than that she is a leader of the political opposition,"

VOA: standard.2009.11.12

Energy has become a major concern in several Western countries, after a dispute between Ukraine and Russia over prices led to major natural gas shortages in Europe earlier this year.

VOA: standard.2009.10.23

The political gridlock is drawing concern that the protest over the restoration of senior judges could further weaken a government already struggling to deal with the country's faltering economy and a strengthening Taliban insurgency.

VOA: standard.2009.03.15