Š¿Žšƒ‚ƒoƒCƒ‹ƒQ[ƒ€
Žc”O
period of time =
1. Šú
2. Õ
3. —¬
4. •M

ƒŒƒxƒ‹3. •ύX
SDAL“‡‰pŒêŠwZ