Problem representation is the key issue in solving problems.

问题表征是问题解决的重要环节。

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Urbanization is the key of solving all the problems of China at present.

城市化是解决中国当前问题的关节点。

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Urbanization is the key of solving all the problems of China at present.

城市化是解决中国当前问题的关节点。

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