然后这项方法会在延迟定义的间隔时间内进行重复，直到时间用完，或者已经过了确认点为止，如代码清单 6 所示。
These methods then repeat the test at the interval defined by the delay until either time runs out or the verification point passes, as shown in Listing 6.
的确，比如拿《灵异第六感》来说，要是提前知道了情节转折点，你会用完全不同的方式观看整部电影。
Indeed, knowing the plot twists to some movies for instance, such as the Sixth Sense, make you view the whole movie in a different way.
能在家附近租辆自行车，用完后退还到单位附近的租车点为什么还要冒着被偷的风险自己买一辆？
Why buy a bike (and risk having it stolen) when you can pick one up at a bike rack near your home and drop it off at another rack near your office?
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