类别样板特制化在用于传回型别之前未定义。

A class template specialization was not is defined before it was used in a return type.

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这个方法的预设实作会传回型别阵列中所有集合项目的型别。

The default implementation of this method returns the type of all the collection items in a type array.

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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。

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

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