tick vt. 打勾作记号
The teacher ticked three of his five questions off and gave him a grade of C.
I ticked off a name on the list because it was not familiar to me.
滴滴答答地记录时间 The clock ticked off / away the time.
The telegraph ticked out a message.
n. 一瞬间 We’ll be ready in a couple of ticks.
Half a tick!
to / on the tick 极为准时地
