歷時

历时
lìshí
  1. to last
  2. to take (time)
  3. period
  4. diachronic

CEDICT

Entry Composition

1 歷 lì
  1. to experience
  2. to undergo
  3. to pass through
  4. all
  5. each
  6. every
  7. history
2 時 shí
  1. o'clock
  2. time
  3. when
  4. hour
  5. season
  6. period