parameter type的用法和樣例：
例句
- The return type and parameter types of a delegate type must be at least as accessible as the delegate type itself.
委託類型的返回類型和參數類型必須至少與委託類型本身具有同樣的可訪問性。 - When a generic method is called without specifying type arguments, a type inference process attempts to infer type arguments for the call.
當不使用特定類型的參數調用一個泛型函數時，類型推斷會嘗試為此次調用推斷參數類型。
