ㄔㄥˊㄑㄧㄢㄌㄟˇㄨㄢˋchéngqiān‑lěiwàn

成千累万
  1. 形容數量」、成千上萬」。 成交成千累萬」、參觀成千累萬」。

lit. by the thousands and tens of thousands (idiom)​; untold numbers, innumerable, thousands upon thousands