虽然看起来很简单，不过很快会看到，这是本库中最难写的代码。
Although this seems straightforward, as will be seen later, it is the most difficult code hack of the library.
虽然这看起来很简单，不过很容易破坏规则。
Although they sound simple, it is too easy to break these rules.
虽然XMLEventReader接口看起来似乎很简单，但是基于事件迭代器的方法具有一个基于指针的方法不具备的重要优点。
Even though the XMLEventReader interface seems deceptively simple, the event iterator-based approach offers an important advantage over the cursor-based method.
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