ground floor

US /ˈɡraʊnd flɔːr/
UK /ˈɡraʊnd flɔːr/
"ground floor" picture
1.

1階, 地上階

the floor of a building that is at the same level as the ground outside

:
The reception area is on the ground floor.
受付は1階にあります。
Our apartment is on the ground floor, so it's easy to access.
私たちのアパートは1階にあるので、アクセスしやすいです。