like clockwork
US /laɪk ˈklɑːk.wɜːrk/
UK /laɪk ˈklɑːk.wɜːrk/

1.
像发条一样准时, 有条不紊地
with perfect regularity and predictability
:
•
Every morning, the train arrives like clockwork at 7:00 AM.
每天早上,火车都像发条一样准时在早上7点到达。
•
The whole operation ran like clockwork, without any hitches.
整个行动都像发条一样顺利,没有任何障碍。