供需

gōng xū supply and demand

资源

Zī yuán Ziyuan county in Guilin 桂林[Gui4 lin2], Guangxi

zī yuán natural resource (such as water or minerals); resource (such as manpower or tourism)

平台

píng tái platform; terrace; flat-roofed building

系统

xì tǒng system; CL:個|个[ge4]

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