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

ƒŒƒxƒ‹3. •ύX
SDAL“‡‰pŒêŠwZ