This is a serious problem.

这是一个很严肃的问题。

youdao

For the Alps this is a serious problem.

对阿尔卑斯山来说，这是个严重的问题。

youdao

Calvin Spealman argues this is a serious problem.

Calvin Spealman提出这是一个严重的问题。

youdao

This is a serious problem effecting nearly ever facet of life that demands immediate action.

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Globally this is a serious problem, it is a leading cause of death especially among children.

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"This is a serious problem, and it's something the department is addressing, " he told the Pentagon briefing Tuesday.

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