此外，在理解透2nd马的关卡精妙之后，你还能花上不少时间研究自己的关卡，这种“设计”的乐趣，大概只有《创世小玩家》能get得到。Firearms and ammunition ballistics have modified considerably over the last 50 %-century, but among the biggest leaps in efficiency hit the scene five many years ago, whe