all the time始终
time after time
一次又一次地；重复地
time and again
一次又一次；重复地
bide one's time
等待良机
from time to time
有时；偶尔；时常
have no time for
没时间做（某事）
in no time (at all)
立刻；赶快；马上
keep time
（钟表）走得准
many a time
常常；多次
on time
准时；按时
The train arrived on time.
火车准时到达.