One obvious question is, where should the checking be performed?
一个明显的问题是,在何处执行检查?
In fact, this explanation also answers the question of how the execution of the trait's methods can be deferred until they're used for checking.
实际上,这个解释也回答了为何可以推迟特征方法的执行,直至用该检查的时候。
That raises the question: After waiting patiently in line, will viewers then spend the entire movie checking their watches?
不过上述“如厕宝典”也有一个问题:在耐心地排了这么久的队之后,观众欣赏影片时难道还会去频频看表吗?
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