大小单双倍投怎么计算

简介：Holding the blunderbuss in one hand, he skillfully opened the primer pot, raised the barrel, took out the gunpowder from the gunpowder bag he carried with him, and carefully but accurately measured it poured into the barrel. His fingers are slender, his fingertips are very stable, and his wrist is very strong. A ten-pound gun is as light as a gun in his hand.