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

ƒŒƒxƒ‹3. •ÏX
SDAL“‡‰pŒêŠwZ