反射是运行时发现的关于给定类或接口的信息，如方法、字段和构造函数。

Reflection is the runtime discovery of information, such as methods, fields, and constructors, about a given class or interface.

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在编程语言上下文中，元数据是添加到程序元素如方法、字段、类和包上的额外信息。

In the programming language context, metadata is additional information attached to program elements such as methods, fields, classes, and packages.

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通用语言中的传统的抽象机制，如方法和类，已不足以满足建立新的抽象层次的需要。

Conventional abstraction mechanisms of general purpose programming languages such as methods and classes, are no longer sufficient for creating new abstraction layers.

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One way is to allow these bacteria to grow on a plate that is loaded with antibiotics like Ampicillin.

一种方法,是让这些细菌,在有大量抗生素如氨苄青霉素,的培养基上生长

耶鲁公开课 - 生物医学工程探索课程节选

I don't know. Does anybody--It has been-- The colleague answered and said that it's not as effective as other methods.

我不是很清楚,有同事回答说,这种方法并不如其他方法有效

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So you can see, even the quadratic ones can blow up in a hurry.

如你所见，甚至平方级复杂度的方法。

麻省理工公开课 - 计算机科学及编程导论课程节选