1. The squad leader was in the forefront of the fighting.
    班长在战斗最前线。

2. Cartridges are ejected from the gun after firing.
    开枪後子弹壳从枪膛弹出.

3. Imagine Japanese soldiers firing at passers-by in the streets of Beijing and Tianjin — and Kuomintang agents breaking into college dormitories at midnight to arrest anyone whose name was on the black list!
    想象一下日本士兵在北京和天津的大街上向过路人开火——国民党密探深更半夜闯入大学的学生宿舍逮捕黑名单上的人！