Š¿Žšƒ‚ƒoƒCƒ‹ƒQ[ƒ€
Žc”O
period of time =
1. ‰·
2. ‹}
3. Šú
4. ‹}

ƒŒƒxƒ‹3. •ύX
SDAL“‡‰pŒêŠwZ