(tān) — to collapse; to cave in

坍 is a formal/written verb for structures or earth collapsing or caving in (walls, houses, mountains). It does not describe people fainting — for that use 晕.

verb
to collapseto cave in

예문

  • Nà zuò lǎo jiù de wēi fáng zài bào fēng yǔ zhōng tū rán tān le.
    That old dangerous house suddenly collapsed in the storm.
  • Dì zhèn dǎo zhì shān tǐ tān xiàn, zǔ sè le jiāo tōng.
    The earthquake caused the mountain to cave in, blocking traffic.
  • Suí zhe dì jī xià chén, nà miàn qiáng yǐ jīng kāi shǐ tān liè.
    As the foundation subsided, that wall began to crack and collapse.

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