Long Bow到底比Common Bow强多少，用数字来说话：
击中概率Long Bow是1/3，Common Bow是1/6。
但是这个概率实际指导价值很低，考虑到BL里面被击中也不减攻击力，
我们改算秒杀的概率更实在。
攻击满员步兵（4个单位）
Common Bowx2 0.000771604938272
Common Bowx3 0.00870198902606
Common Bowx4 0.0306564119418
Common Bowx2, Darken Sky 0.0306564119418
Common Bowx3, Darken Sky 0.12517809268
Common Bowx4, Darkey Sky 0.270895203271
Long Bowx2 0.0123456790123
Long Bowx3 0.100137174211
Long Bowx4 0.258649596098
Long Bowx2, Darken Sky 0.258649596098
Long Bowx3, Darken Sky 0.606925321908
Long Bowx4, Darken Sky 0.834054166402
攻击满员骑兵（3个单位）
Common Bowx2 0.0162037037037
Common Bowx3 0.0622856652949
Common Bowx4 0.134846893576
Common Bowx2, Darken Sky 0.134846893576
Common Bowx3, Darken Sky 0.322573805101
Common Bowx4, Darkey Sky 0.513208963608
Long Bowx2 0.111111111111
Long Bowx3 0.319615912209
Long Bowx4 0.531778692273
Long Bowx2, Darken Sky 0.531778692273
Long Bowx3, Darken Sky 0.818877354212
Long Bowx4, Darken Sky 0.940624885226
攻击伤残部队（2个单位）
Common Bowx2 0.131944444444
Common Bowx3 0.263224451303
Common Bowx4 0.39532309766
Common Bowx2, Darken Sky 0.39532309766
Common Bowx3, Darken Sky 0.618667373732
Common Bowx4, Darkey Sky 0.772830849684
Long Bowx2 0.407407407407
Long Bowx3 0.648834019204
Long Bowx4 0.804907788447
Long Bowx2, Darken Sky 0.804907788447
Long Bowx3, Darken Sky 0.946048573595
Long Bowx4, Darken Sky 0.986298050437
总结一下，就是长弓发生奇迹的概率是普通弓的8倍
