供需

gōng xū supply and demand

结构

jié gòu structure; composition; makeup; architecture; CL:座[zuo4],個|个[ge4]

什么

shén me what?; who?; something; anything

意思

yì si idea; opinion; meaning; wish; desire; interest; fun; token of appreciation, affection etc; CL:個|个[ge4]; to give as a small token; to do sth as a gesture of goodwill etc

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