“®ŽŒƒ‚ƒoƒCƒ‹ƒQ[ƒ€
Žc”O
open (transitive) =
1.
H‚ׂé
‚½‚ׂé
2.
Œ¾‚¤
‚¢‚¤
3.
‚ ‚¯‚é
4.
‚Í‚½‚ç‚
ƒŒƒxƒ‹4.
•ÏX
SDAL“‡‰pŒêŠwZ