利用号盘配数字的变换控制开启的锁。
我的更衣室的柜子上装着一把号码锁。
I have a combination lock on my locker in the changing room.
生活就像一把号码锁。你的任务就是发现正确的号码和正确的顺序，这样你就会得到你想要的一切。——博恩·崔西。
Life is like a combination lock; your job is to find the right Numbers, in the right order, so you can have anything you want. — Brian Tracy.
在实物保险箱及号码锁的安全措施之下，盗贼将需要近乎无限的耐心以及近乎无限的预期寿命，才能将各种排列组合的可能性从头到尾尝试一遍。
With a physical safe and a combination lock, the thieves would need nearly infinite patience and a nearly infinite life expectancy to work their way through the possibilities.
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