Š¿Žšƒ‚ƒoƒCƒ‹ƒQ[ƒ€
Žc”O
period of time =
1. Šú
2. –ð
3. Žn
4. ‹æ

ƒŒƒxƒ‹3. •ÏX
SDAL“‡‰pŒêŠwZ