“®ŽŒƒ‚ƒoƒCƒ‹ƒQ[ƒ€
Žc”O
open (transitive) =
1.
‚·‚é
2.
‚¤‚½‚¤
3.
‚ ‚¯‚é
4.
‚Ë‚é
ƒŒƒxƒ‹4.
•ÏX
SDAL“‡‰pŒêŠwZ