源源不斷

源源不断
yuányuánbùduàn
(idiom) in an unending stream; continuous

CEDICT

Entry Composition

1 源 yuán
  1. root
  2. source
  3. origin
2 源 yuán
  1. root
  2. source
  3. origin
3 不斷 bùduàn
  1. unceasing
  2. uninterrupted
  3. continuous
  4. constant