Š¿Žšƒ‚ƒoƒCƒ‹ƒQ[ƒ€
Žc”O
period of time =
1. ˆÃ
2. Šú
3. ‰w
4. —m

ƒŒƒxƒ‹3. •ÏX
SDAL“‡‰pŒêŠwZ