To add new methods to a particular class of type t, it only needs to define static methods that accept type t as the first parameter.

要向类型为t的特定类添加新方法，只需定义一个静态方法，它接受类型T作为第一个参数。

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Very often we are reluctant to accept new thoughts, new ideas, new concepts, new knowledge, and new methods. That is the reason why we cannot upgrade ourselves.

我们常常会拒绝接受“新思想、新思维、新观念、新知识、新方法”，这就是我们不能进步的原因。

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Understand the difference of teaching systems and methods between Chinese and western and be willing to accept new teaching modes;

对中西方教学体系和教学方法的差异有所认识，乐于接受全新的教学模式；

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