一旦 yī dàn — in case (sth happens); if; once (sth happens, then...); when; in a short time; once

一旦
yī dàn

Characters: 一 · 旦

Definitions

  1. in case (sth happens); if; once (sth happens, then...); when; in a short time; once

More definitions

CC-CEDICT

  1. in case (sth happens)
  2. if
  3. once (sth happens, then...)
  4. when
  5. in a short time
  6. in one day

zdic(汉典)

  1. 不确定的时间
  2. in a very short time;in a single day

ExtDict

  1. 一天
  2. 一天之内一旦杀三卿
  3. 副词。表示某一天一旦横祸飞来，将何以避之｜一旦大桥建成，就可大大缓解南北交通。

Examples

  • 一旦做出决定，就不要轻易反悔。

    Once you've made a decision, don't easily go back on it.

  • 水一旦烧开，就把面条放进去。

    Once the water boils, put the noodles in.

  • 这项技术一旦成熟，将会改变整个行业。

    Once this technology matures, it will transform the whole industry.