一个严重的社会问题- A Serious Social Problem ; A Serious
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。
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.
少年犯罪上这个国家一个严重的社会问题。
Social 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。
Juvenile delinquency is a serious social problem in this country.
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