stair S2 W3 / steə $ ster / 名词

1 stairs [复数形式] a set of steps built for going from one level of a building to another → upstairs , downstairs

up/down the stairs

Jerry ran up the stairs.

the top/head of the stairs

I left my briefcase at the top of the stairs.

the bottom/foot of the stairs

‘Lisa,’ he cried from the foot of the stairs.

We walked up four flights of stairs (= sets of stairs ) .

2 [可数名词] one of the steps in a set of stairs :

Lucy sat down on the bottom stair.

3 [单数形式] literary a staircase

4 below stairs British English old-fashioned in the servants’ part of a large house, in the past