In fact, super will be bound when this trait is mixed into an instance that defines a concrete click method, such as Button.
实际上，super会在这个trait混入一个定义了具体click方法的实例的时候被绑定。
Exclusive shook his head dolls feature, click the mouse a few friends will be able to put people into a super-Ray QQ expression, to make your QQ different blockbuster!
独家摇头娃娃功能古代四大美女是谁，点击鼠标几下就能把好友变成超雷人QQ表情，让你的QQ与众差别一举成名！
Exclusive shook his head dolls feature, click the mouse a few friends will be able to put people into a super-Ray QQ expression, to make your QQ different blockbuster!
独家摇头娃娃功能古代四大美女是谁，点击鼠标几下就能把好友变成超雷人QQ表情，让你的QQ与众差别一举成名！
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