“®ŽŒƒ‚ƒoƒCƒ‹ƒQ[ƒ€
Žc”O
open (transitive) =
1.
‚ ‚¯‚é
2.
‚¨‚è‚é
3.
o‚·
‚¾‚·
4.
‚µ‚Ê
ƒŒƒxƒ‹4.
•ÏX
SDAL“‡‰pŒêŠwZ