stair [steə(r)]

以下由轻松背单词网站提供

n.(阶梯的)一级；楼梯

a set of steps which lead from one level of a building to another

His office is down the stair. 他的办公室在楼下。
He heard soft footsteps coming up the stair. 他听见有人上楼的轻微脚步声。