Our math teather is very patient and explains things to us___ ____英语解答

Our math teather is very patient and explains things to us___ ___ ___ ___(一次又一次).

人气：156 ℃　时间：2020-06-16 12:54:38

解答

time and time again
相当于again and again
含义为“一次又一次地”