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1·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。

2·Teachers have expressed concern about the changes.

教师对这些变化表示忧虑。《牛津词典》

3·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》

4·There is a concern about replenishment of the population.

有人担心人口的补充问题。《柯林斯英汉双解大词典》

5·Some senators expressed concern about being portrayed as gay-bashers.

一些参议员表示担心被塑造成会用暴力对待同性恋者的人。《柯林斯英汉双解大词典》

6·A number of parents have voiced concern about their children's safety.

一些家长对他们子女的安全表示了担心。《牛津词典》

7·The police have expressed grave concern about the missing child's safety.

警方对失踪孩子的安全深表关注。《牛津词典》

8·The group has expressed concern about reports of political violence in Africa.

该集团已对有关非洲政治暴力的报道表示担忧。《柯林斯英汉双解大词典》

9·His action is indicative of growing concern about the shortage of skilled labour.

他的行为显示对于熟练工人短缺现象的日益关注。《柯林斯英汉双解大词典》

10·The scientists showed great concern about the warming of the earth.

科学家们对全球变暖感到非常担忧。