外推

wài tuī to extrapolate

式

shì type; form; pattern; style

窗户

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

怎么

zěn me how?; what?; why?

zěn me variant of 怎麼|怎么[zen3 me5]

关

guān mountain pass; to close; to shut; to turn off; to concern; to involve

Guān surname Guan

不

bù (negative prefix); not; no

严

yán tight (closely sealed); stern; strict; rigorous; severe; father

Yán surname Yan

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