first floor

US /ˌfɜːrst ˈflɔːr/
UK /ˌfɜːrst ˈflɔːr/
"first floor" picture
1.

1층

the floor of a building at ground level or immediately above the ground floor

:
The office is on the first floor.
사무실은 1층에 있습니다.
Take the elevator to the first floor.
엘리베이터를 타고 1층으로 가세요.