on the floor与on the ground的区别?

on the floor与on the ground的区别? The Meeting Rooms are on the ground floor的翻译 My classroom is on the ground floor. on the ground floor(英译中） on the ground floor 的中文意思是什么? in the ground 和on the ground的区别 in the ground和on the ground的区别 on the ground 和 on the grounds 的区别 在地板上的英文是on the floor还是on the ground? in the second floor与on the second floor的区别,谢谢T-T： on the ground lay a boy与there is a boy lay on the ground 的区别 The Meeting Rooms are on the ground floor中文