“®ŽŒƒ‚ƒoƒCƒ‹ƒQ[ƒ€
Žc”O
open (transitive) =
1.
‚¿‚ª‚¤
2.
‚ ‚¯‚é
3.
‚«‚¦‚é
4.
‚¨‚è‚é
ƒŒƒxƒ‹4.
•ÏX
SDAL“‡‰pŒêŠwZ