stair /stɛə/ n.[c]楼梯(常用pl.): on the stairs在楼梯上;go up/down stairs 上(下)楼;a flight/pair of stairs 一段楼梯[注]staircase 即 stairway楼梯
staircase /ˈstɛəkeis/ n. [c]楼梯:ascend a staircase 上楼梯;fall off the staircase 摔下楼梯; a spiral staircase 螺旋楼梯
stair /stɛə/ n.[c]楼梯(常用pl.): on the stairs在楼梯上;go up/down stairs 上(下)楼;a flight/pair of stairs 一段楼梯[注]staircase 即 stairway楼梯
staircase /ˈstɛəkeis/ n. [c]楼梯:ascend a staircase 上楼梯;fall off the staircase 摔下楼梯; a spiral staircase 螺旋楼梯