封冻

fēngdòng

(of a river, the ground, etc.) freeze

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feng1 dong4

to freeze over (of water or land)

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封冻

fēng dòng

freeze-up

封冻期 a period of freezing weather; freeze; freeze-up

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封凍|封冻 [fēng dòng] ► to freeze over (of water or land)