源源不断

yuányuánbùduàn

HSK 7

源源不断 — yuányuánbùduàn

1. in an unending stream; continuous; without interruption

   这个城市的游客源源不断。 zhège chéngshì de yóukè yuányuánbùduàn — Tourists keep coming to this city in an unending stream.