This government is committed to extending parental choice in education.
本届政府承诺扩大父母在教育方面的选择权。
Your design can sometimes dictate which choice you make; for example, extending base types with subtypes is clearly a more object-oriented approach.
您的设计有时可以支配您的选择，例如，以子类型扩展基本类型则更加趋向于面向对象方法。
For method content authoring, you again have the choice of defining completely new content or extending existing method content.
在方法内容的创造中，你既可以定义全新的内容，也可以扩展已有的方法内容。
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