Š¿Žšƒ‚ƒoƒCƒ‹ƒQ[ƒ€
Žc”O
period of time =
1. Šú
2. ŒW
3. W
4. ˜H

ƒŒƒxƒ‹3. •ÏX
SDAL“‡‰pŒêŠwZ