供需

gōng xū supply and demand

会

huì can; to be possible; to be able to; will; to be likely to; to be sure to; to assemble; to meet; to gather; to see; union; group; association; CL:個|个[ge4]; a moment (Taiwan pr. for this sense is [hui3])

kuài to balance an account; accountancy; accounting

是

shì is; are; am; yes; to be

shì variant of 是[shi4]; (used in given names)

什么

shén me what?; who?; something; anything

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