c#隐藏和重写基类方法的区别

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace interfaceInfo
{
    public class animal
    {
        public void action()
        {
            Console.WriteLine("eat sleep fuck");
        }

        public virtual void show()
        {
            Console.WriteLine("show...");
        }
    }
    public class dog : animal
    {
        public new void action()
        {
            Console.WriteLine("new...");
        }

        public override void show()
        {
            Console.WriteLine("override");
        } 



    }
    class Program
    {
        static void Main(string[] args)
        {
            dog d = new dog();
            d.action();  //new...
            d.show();   //override

            Console.ReadLine();

            animal an = new dog();
            an.action();  //  eat sleep fuck
            an.show();    //  override

            Console.ReadLine();
           
        }
    }
}