First floor
01
一階, 地上階
the floor of a building which has the same level as the street level
Dialect
American
American
例
The café on the first floor of the building has excellent coffee.
建物の1階にあるカフェは素晴らしいコーヒーがあります。
02
一階, 階
the level of a house or building that is located directly above the ground level
Dialect
British
British
