Š¿Žšƒ‚ƒoƒCƒ‹ƒQ[ƒ€
Žc”O
period of time =
1. Š
2. `
3. “J
4. Šú

ƒŒƒxƒ‹3. •ÏX
SDAL“‡‰pŒêŠwZ