delegate-type的意思|示意

Whenever a new set of argument types or return value type is needed, a new delegate type must be declared.

当需要一组新的引数型别或传回值型别时，必须宣告一个新的传回型别。

The . funcptr property of a delegate will return the function pointer value as a function type.

函数指针和委托可能会合并到一个统一的语法中并且可以互相代替。

The ExecuteFromPool method accepts a delegate and arguments in addition to the desired type.

ExecuteFromPool方法除了接受所需类型以外，还接受委托和参数。

There also the compiler ensures that the return value of EndInvoke is the same as the return value of the delegate type (this type is an int in our example).

编译器同时也会确保EndInvoke返回值类型和委托返回类型一致（在我们的例子中，这个类型是int）。

You can use the delegate type to declare a variable that can refer to any method with the same signature as the delegate.

可以使用委托类型来声明一个变量，该变量可以引用与委托签名相同的所有方法。

Delegate is just another type, so you don't gain anything by putting it inside the interface.

翻译过来大致意思就是：委托只是一种类型，把委托放在接口中你什么也得不到。