Level 2 · word 607 of 20,000

while

/ˈwæl/ American
  • conj. 当...的时候, 虽然
  • n. 一段时间
Definition
  • conj. at the same time as something, or although
  • n. a period of time
Example
She read a book while waiting for the bus.
她一边等公交车,一边看书。