外推

wài tuī to extrapolate

式

shì type; form; pattern; style

窗户

chuāng hu window; CL:個|个[ge4],扇[shan4]

把手

bǎ shǒu handle; grip; knob

更换

gēng huàn to replace (a worn-out tire etc); to change (one's address etc)

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