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

ƒŒƒxƒ‹3. •ÏX
SDAL“‡‰pŒêŠwZ