Š¿Žšƒ‚ƒoƒCƒ‹ƒQ[ƒ€
Žc”O
period of time =
1. ‹Ž
2. Šú
3. •Ô
4. •@

ƒŒƒxƒ‹3. •ÏX
SDAL“‡‰pŒêŠwZ