He shook his head , shouldered the rusty firelock .

他摇了摇头，掮上那支生锈的火枪。

Firelock tomorrow arrives at evolution of ching dynasty firelock .

明朝的火枪到清朝火枪之演变。

When he opens it , therein is to be found gunpowder and a firelock which sets fire unto it , so he became very injured .

当他打开盒子时，发现里面是火药和将火导向火药的火枪。所以他伤得很重。