1.词汇
- delegate type 委托类型
- delegate instance 委托实例
- invoke 调用
2.例句
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We’ll start our tour of delegates with the four absolute basics, without which none of the rest would make sense.
在开始我们的委托之旅之前，我们需要先了解4个基本条件，它们缺一不可。
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In order for a delegate to do anything, four things need to happen:
(1)The delegate type needs to be declared.
(2) The code to be executed must be contained in a method.
(3) A delegate instance must be created.
(4) The delegate instance must be invoked.要实现委托，需要做4件事：
（1）委托类型需要先声明；
（2）要执行的代码需要包含在一个方法内；
（3）需要创建委托实例；
（4）委托实例需要被调用。
