Developing a grammar with any parsing tool produces similar surprises, but I found DParser's somehow particularly surprising; SimpleParse, for example, surprised me less.
使用任何解析工具开发语法都会有类似的意外，但是我发现DParser不知何故尤其出乎意料；例如SimpleParse，就不会让我那么感到惊讶。
While you are developing your schema grammar, you should set this feature to true so that Xerces2 will check all the constraints necessary to determine if your schema is valid.
如果您在开发自己的模式语法，应该将该特性设为true，让Xerces2检查所有必要的约束，确定模式是否有效。
The principles of developing it are those of grammar, communication, cognition, emotion, relation, practice and so on.
培养该能力的教学原则是语法原则、交际原则、文化原则、认知原则、情感原则、相关性和实用性原则等。
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