Š¿Žšƒ‚ƒoƒCƒ‹ƒQ[ƒ€
Žc”O
floor of a building =
1.
h
2.
ŠK
3.
’²
4.
Žó
ƒŒƒxƒ‹3.
•ÏX
SDAL“‡‰pŒêŠwZ