三不五時

三不五时
sānbùwǔshí
  1. (Tw) from time to time
  2. frequently

CEDICT

taiwan

Entry Composition

1 三不 sānbù the three no's (abbreviated catchphrase)
2 五 wǔ
  1. five
  2. 5
3 時 shí
  1. o'clock
  2. time
  3. when
  4. hour
  5. season
  6. period