推广

tuī guǎng to extend; to spread; to popularize; generalization; promotion (of a product etc)

圈

quān circle; ring; loop; classifier for loops, orbits, laps of race etc; CL:個|个[ge4]; to surround; to circle

juān to confine; to lock up; to pen in

juàn pen (pig); a fold

担保

dān bǎo to guarantee; to vouch for

平台

píng tái platform; terrace; flat-roofed building

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