Š¿Žšƒ‚ƒoƒCƒ‹ƒQ[ƒ€
Žc”O
period of time =
1. Šú
2. —Î
3. “’
4. ˆ«

ƒŒƒxƒ‹3. •ÏX
SDAL“‡‰pŒêŠwZ