鮮奶白豆花
13 years ago
鑰匙丟掉又被室友撿回來的機率有多大?
chiayu0517
13 years ago
你把鑰匙丟了?XD
鮮奶白豆花
13 years ago
chiayu0517: 嗯= = 結果又被健明撿回來了
Liao Shao Yu
13 years ago
水喔xd
立即下載
chiayu0517
13 years ago
敗持XD
龍龍兒
13 years ago
稀少性事件請用卜瓦松或負二項求解XD