stair，n.1. (阶梯等的)一级，梯级2. [用复数，用作单数或复数]阶梯，楼梯3. [用复数]【船舶学】浮动平台4. 阶梯，途径stair [stεə] n. 英语解释：support consisting of a place to rest the foot while ascending or descending a stairway stairs——是stair的复数形式。staircase ['stεəkeis] n.楼梯；楼梯间【即可指“楼梯”，还可指“设置楼梯的房间部分”】英语解释：a way of access (upward and downward) consisting of a set of stepsstep 【重点强调“台阶”，而且，单复数意义不同。】 梯级，台阶；踏板。 [用复数]一段楼梯，一段台阶英语解释：support consisting of a place to rest the foot while ascending or descending a stairwaystairway n.【建筑专业用词】 阶梯，楼梯英语解释：a way of access (upward and downward) consisting of a set of steps 当然，指代“台阶，阶梯”时，stair与step一般可互换。 祝你学习进步，时时开心！O(∩_∩)O~~
罗成or房谋杜断
