ㄑㄧˊㄊㄡˊtóu

  1. 齊頭」,整數醒世姻緣傳·》:員外齊頭!』朝奉如今幾時盛价!』」平頭」。

  2. 共同一起齊頭並進」。

at the same time, simultaneously, (when stating a quantity that is a round number)​ exactly