The second option can be useful if the XML data that needs to be accessed is difficult to anticipate in advance.
如果很难预先确定需要访问的XML数据，那么第二种方法更合适。
Although some of the experts statements are very concrete, we should not forget that it is very difficult to anticipate the future.
虽然一些专家的描述很具体，但是我们要知道很难预测未来。
For example, do not create a filter that attempts to filter out only unacceptable elements-it is difficult to anticipate every possible bad input.
例如，不要创建尝试只筛选出不可接受元素的筛选器，因为预料每个可能的错误输入十分困难。
To anticipate every imaginable driving situation is a difficult programming problem.
预测每一种可能的驾驶情况是一个困难的编程问题。
While many companies and LABS have been using x86 architectures for quite some time and don't anticipate variations, disruptive changes in technology are always difficult to predict.
尽管许多公司和实验室在很长时间内一直使用x86体系结构，并且不希望有任何变化，但是技术上的变化总是难以预测的。
Using Grounding to anticipate a Curse of Exhaustion or even Death Coil is not too difficult.
使用根基吸收疲劳诅咒和死亡缠绕也并不困难。
Despite the fact that these variables can be difficult to fully anticipate without research, they often become the basis of the persona hypothesis for consumer products.
尽管不经过研究很难完全预测，这些变量常常作为消费品人物角色假设的依据。
Despite the fact that these variables can be difficult to fully anticipate without research, they often become the basis of the persona hypothesis for consumer products.
尽管不经过研究很难完全预测，这些变量常常作为消费品人物角色假设的依据。
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