Their timetables were so haywire they seldom had time to talk for any length of time.他们的作息时间实在太乱，就连谈一会儿话的时间都难得有。The importance of a regular bedtime routine can't be stressed enough.规律的作息时间是极为重要的。He keeps regular hours.他的作息时间很有规律。Try to keep to a regular timetable of waking and sleeping.要尽量遵循有规律的作息时间。