In each, she draws on the research literature and keys it to features of her program, to show what the school children learn in relation to each topic.
在每一部分，她引用研究文献并使其项目的特征和研究保持一致，以此来展示学校中的孩子们学到了哪些与各个主题相关的东西。
Over the past month, I've been able to find Rails plug-ins to handle voting, versioning, Ajax, composite keys, and all manner of features that basic Rails doesn't support.
在过去一个月里，我可以找到能够解决投票、版本化、Ajax、复合键以及不受基本Rails支持的所有特性的插件。
The bulk of the Ruby class Calc USES Ruby's metaprogramming features to define functions at run time for all the digit keys and for the math operation keys.
大多数Ruby类Calc使用Ruby的元编程功能，在运行时为所有数字键和数学操作键定义功能。
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