了解

liǎo jiě to understand; to realize; to find out

liǎo jiě to understand; to realize; to find out

什么

shén me what?; who?; something; anything

叫

jiào to shout; to call; to order; to ask; to be called; by (indicates agent in the passive mood)

jiào variant of 叫[jiao4]

供需

gōng xū supply and demand

平衡

píng héng balance; equilibrium

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