供求

gōng qiú supply and demand (economics)

信息

xìn xī information; news; message

发布

fā bù to release; to issue; to announce; to distribute

fā bù to release; to issue; to announce; to distribute; also written 發布|发布[fa1 bu4]

系统

xì tǒng system; CL:個|个[ge4]

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