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Central idea: People create producing and consuming system to support self needs.
中心思想：胦人们创设生产与消费系统以满足自身的需求。
youdao
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China is a big energy consuming and energy producing country.
我国既是产能大国又是耗能大国。
youdao
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China is a big energy consuming and energy producing country.
我国既是产能大国又是耗能大国。
youdao