clock in
phrasal verb with clock verb [ T ] uk/klɒk/ us/klɑːk/
informal (UK also clock on)
（在专门的机器上）记录上班时间，打上班卡
to record the time you arrive at work on a special machine
What time did you clock in this morning? 今天早上你几点打的卡？
Clocking-in time is 9.00 a.m. 打卡时间是上午9点。