一旦
yī​dàn HSK5

once

  • updated sense approved 一旦 · yī​dàn · once

    一旦

    yī​dàn

    once

    once (something happens); in case; if

    一旦开始，就不能停下来。

    adverb → adverb, conjunction

    updated sense

  • created sense approved 一旦 · yī​dàn · once

    一旦

    yī​dàn

    once

    once (something happens); in case; if

    一旦开始，就不能停下来。

    adverb

    created sense

  • created sense approved 一旦 · yī​dàn · short time

    一旦

    yī​dàn

    short time

    in a single day; in a very short time

    他多年的心血毁于一旦。

    idiom

    created sense