一旦

yī dàn

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Definitions

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

Child Words of 一旦

一
yī

one

旦
dàn

(literary) dawn; daybreak