金乌axure素材:walk on both legs是啥子意思？

walk on both legs是啥子意思？ on both是词组吗 what has four legs but cannot walk what has four legs but cannot walk? walk on the wildside walk on the water? U2 乐队《WALK ON》 waht walks on four legs in the morning,two legs during the day,and three legs in the evening? Walk on by 在英语里是什么意思？ 求walk on 的歌词？谢谢谢