A distinguishing quality or characteristic of a person or thing.

• A habitual pattern of behavior or disposition.

人或事物的显著特征或特点。

• 习惯性的行为模式或性格倾向。

Computing: an uninstantiable set of methods that adds behavior to a type via its interface, used for reuse and polymorphism.

计算机：一种不可实例化的方法集合，通过类型的接口提供行为，用于复用与多态。