staircase

US /ˈster.keɪs/
UK /ˈster.keɪs/
"staircase" picture
1.

階段

a set of stairs and its surrounding structure

:
The grand staircase led up to the ballroom.
壮大な階段が舞踏室へと続いていた。
Be careful when you go down the staircase, it's a bit slippery.
階段を降りるときは気をつけて、少し滑りやすいです。