you cannot can a can that cannot be canned.

问题描述:

you cannot can a can that cannot be canned.

类似下面的绕口令:
Canners can can what they can can but can not can things can’t be canned.
当然可以翻译成:
你不可能把东西装进一个不能装东西的罐子里.
但是,句子好像表达的是另外的意思:
命中有时终须有,命中无时莫强求