A small metal knob on the muzzle of a firearm, such as a rifle, used for sighting.
准星枪炮口上，瞄准用的小圆金属突起，如来福枪上的准星
A usually metal projectile in the shape of a pointed cylinder or a ball that is expelled from a firearm, especially a rifle or a handgun.
子弹，枪弹从火器中，尤指步枪或手枪中发射出来的金属射弹，形状为尖柱体或球状
A cap or tube containing a small amount of explosive used to detonate the main explosive charge of a firearm or mine.
雷管，底火，导火线装有少量爆炸物的帽或管，用来引爆枪炮或地雷、水雷等
A device for igniting the charge of a firearm.
枪机一种用来点燃火器中火药的装置
firearm详细解释
fire.arm n.（名词）A weapon, especially a pistol or rifle, capable of firing a projectile and using an explosive charge as a propellant.火器：一种能发射子弹并能用一定量的炸药作推进剂的武器，尤指手枪或步枪
