上下台阶时,请您小心台阶问题补充:匿名 2013-05-23 12:21:38 Up and down stairs , please be careful steps 匿名 2013-05-23 12:23:18 正在翻译,请等待... 匿名 2013-05-23 12:24:58 When on backs down, asks you to be careful the stair 匿名 2013-05-23 12:26:38 Up and do...