System Array和 System Co| lections. ArrayList的使用举例 public class Cow Animal public void Milko=>WriteLine($"iname] has been milked. public Cow(string newName): base(newName)0 public class Chicken Animal public void LayEgg(=>WriteLine("name] has laid an egg. " public Chicken(string newName): base (newName)0System.Array和System.Collections.ArrayList的使用举例