Š¿Žšƒ‚ƒoƒCƒ‹ƒQ[ƒ€
Žc”O
period of time =
1. Šú
2. ‘§
3. “s
4. —t

ƒŒƒxƒ‹3. •ÏX
SDAL“‡‰pŒêŠwZ