Œ`—eŽŒƒ‚ƒoƒCƒ‹ƒQ[ƒ€
Žc”O
convenient =
1.
”–‚¢
‚¤‚·‚¢
2.
—Ç‚¢
‚¢‚¢i‚æ‚¢j
3.
‘‚¢
‚͂₢
4.
•Ö—˜
‚ׂñ‚è
ƒŒƒxƒ‹4.
•ÏX
SDAL“‡‰pŒêŠwZ