Thread 线程失去引用，但是为何却能依旧保持接收客户端套接字？
如下这一小段代码，Thread 线程失去引用，但是为何却已然能保持接收客户端套接字？

        Socket socketCommunication = null;

        private void Watch()

        {

            while (true)

            {

                socketCommunication = socketWatch.Accept();

                dictCommunication.Add(socketCommunication.RemoteEndPoint.ToString(), socketCommunication);

             lbSocketOnline.Items.Add(socketCommunication.RemoteEndPoint.ToString());



              // 此处这个 thread 每次都会在新客户端连接后 new 出新对象，但我并没有保存这个 thread 的引用，理论上应该已经丢失引用成为垃圾了

                Thread thread = new Thread(() =>

                {

                    while (true)

                    {

                        byte[] bytes = new byte[1024 * 1024 * 2];

                        int length = socketCommunication.Receive(bytes);

                        string msg = Encoding.UTF8.GetString(bytes, 0, length);

                        ShowMsg("接收到来自" + socketCommunication.RemoteEndPoint.ToString() + "的数据：" + msg);

                    }

                });

                thread.IsBackground = true;

                thread.Start();

                ShowMsg("客户端连接成功！通信地址为：" + socketCommunication.RemoteEndPoint.ToString());

            }

        }