北方

běi fāng north; the northern part a country; China north of the Yellow River

校

xiào school; military officer; CL:所[suo3]

jiào to proofread; to check; to compare

泵

bèng pump (loanword)

网

wǎng net; network

供需

gōng xū supply and demand

平台

píng tái platform; terrace; flat-roofed building

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