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1·He has recently made a significant discovery—loneliness is a serious social problem that can contribute to depression and even crimes, but it can be prevented in a clever way.

他最近有了一项重大发现——孤独是一个严重的社会问题，它会导致抑郁甚至犯罪，但可以用一种聪明的方法加以阻止。

2·It is a social problem, though a more deep-seated social problem than people perhaps realize.

这是一个社会问题，尽管它比人们可能意识到的层次更深。

3·Aging has become a social problem.

老龄化已成为一个社会问题。

4·The poverty of peasant is a social problem.

农民贫困问题是一个社会问题。

5·This book deals with an important social problem.

这本书论述一个重要的社会问题。

6·There is no difficulty in solving this social problem.

解决这个社会问题毫无困难。

7·Crimes on line nowadays has been a serious social problem.

目前，网络犯罪已成为严重的社会问题。

8·But spam is not just a hack or a crime, it is a social problem, too.

但是垃圾邮件不仅仅是一种黑客行为或是犯罪。它也是一种社会问题。

9·Obtain employment problem is a great economy and social problem.

就业问题是一个重大的经济和社会问题。

10·Juvenile delinquency is a serious social problem in this country.

少年犯罪是这个国家一个严重的社会问题。