Š¿Žšƒ‚ƒoƒCƒ‹ƒQ[ƒ€
Žc”O
period of time =
1. Šú
2. ‘Š
3. Τ
4. ‰×

ƒŒƒxƒ‹3. •ÏX
SDAL“‡‰pŒêŠwZ