送交者: BerkeleyWolf 于 2005-4-07, 01:37:41:
回答: Let me do it 由 BerkeleyWolf 于 2005-4-07, 00:28:27:
|----|------------|
| /| * |
| /| * |
| / |-----+-----*|
| / | | /|
|/___|______| / |
| * | / |
| * | / |
|_________*_|/____|