Persevere 会执行延迟加载以便只有需要的数据才会被下载。
Persevere does lazy loading so that only the necessary data is downloaded.
当执行遭到延迟时，需要快速响应时间、获得竞争优势的业务计划也会受挫。
The business initiatives that demand quick response times and are geared towards gaining competitive advantage lose steam when execution is delayed.
比如说，像延迟执行一类的事，人们总是有很多误解：但是如果你看过代码的话，就能够很好的理清头绪了。
For example, topics like deferred execution are often misunderstood: looking at the implementation can clarify things pretty well.
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