您可能想知道，如果数据绑定有这么多的好处，那么何时使用文档模型方法呢？

You might be wondering, if data binding is such great stuff, when would you want to use a document model approach instead? Basically there are two main cases.

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或许要想知道市场预期何时能够腾飞的最佳方式，就是去问自己的雇员—别忘了使用市场预期的方式。

Perhaps the best way to find out when prediction markets will finally take off is to ask your employees-using a prediction market.

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