Bahasa Jepangnya “lantai bawah tanah”

lantai bawah tanah; bawah tanah

underground; world of the dead; underground (activities, movement, etc.); below the ground

lantai bawah tanah kedua; lantai bawah tanah

second basement level; subbasement

lantai bawah tanah; lantai basement

basement floor; underground floor

lantai bawah tanah toserba

basement of a department store (where foodstuffs are usually sold)

huruf B; lantai bawah tanah (mis. B1F)

B; basement floor (as in B1F)