stair

Cầu thang, bậc thang

a set of steps that connect two floors in a building

• go up/down the stairs

Collocations staircase · flight of stairs

• She fell down the stairs.

  Cô ấy đã ngã từ cầu thang.

Bậc thang, bậc cầu thang

one of a set of steps that connect two floors in a building

• the third/fourth/last stair

Collocations stair riser · stair tread

• He tripped on the last stair.

  Anh ấy đã bị vấp ở bậc thang cuối cùng.