Š¿Žšƒ‚ƒoƒCƒ‹ƒQ[ƒ€
Žc”O
period of time =
1. –â
2. Šú
3. ’…
4. ‹q

ƒŒƒxƒ‹3. •ύX
SDAL“‡‰pŒêŠwZ