using System;using System.Threading;class Example{    static void Main()    {        TimeSpan interval = new TimeSpan(0, 0, 2);        for (int i = 0; i < 5; i++)        {            Console.WriteLine("Sleep for 2 seconds.");            Thread.Sleep(interval);        }        Console.WriteLine("Main thread exits.");    }}

/* This example produces the following output:Sleep for 2 seconds.Sleep for 2 seconds.Sleep for 2 seconds.Sleep for 2 seconds.Sleep for 2 seconds.Main thread exits. */

每次输出

"Sleep for 2 seconds." 都会停留2秒