枪械英文介绍急求一篇介绍枪械的英文文章作为演讲稿,可以介绍一种也可以介绍多种,不要长篇大论,演讲2分钟的就够了,好的话有

枪械英文介绍
急求一篇介绍枪械的英文文章作为演讲稿,可以介绍一种也可以介绍多种,不要长篇大论,演讲2分钟的就够了,好的话有加分.

大概就两分钟的长度
有的单词我翻译了下 其他的单词基本上都不难 句子也很容易看懂
A gun is a machine used to shoot bullets.Guns are also called "firearms".They can be of many different sizes:small enough to hold in one hand,or large enough to fire shells to sink a warship（军舰）.Guns that are small enough to be carried and used by one person all have the same basic parts:a trigger（扳机）,a barrel（枪管）,and a handle（枪柄）.The trigger is pulled by a finger to fire the bullet.The barrel guides the bullet.The handle is held by the human who will fire the gun.
In military terms,the word "firearm" is usually used for the type of weapons that soldiers carry (pistols手枪 and rifles步枪),while the word "gun" is used for larger guns that fire at higher speed.The weapons on warships and tanks are called "guns" or "turrets"炮台 (if placed on a rotating可旋转的 base),not "firearms".
Guns are very effective weapons.Guns guide bullets at a very high speed which is much more deadly than a traditional arrow.Bullets are contained within rounds,also known as cartridges(弹药桶).A cartridge consists of a bullet,a casing,Propellant（火药） and a primer（雷管）.Cartridges have different ways of being loaded into different kinds of weapons.Cartridges can be loaded directly into a firearm or into a clip,a magazine or other bullet container which is loaded into the firearm.Some firearms have their rounds loaded into the stock (or butt) of the weapon.A clip is loaded with rounds and the clip is loaded into a weapon.The magazine（弹夹） is a container for the rounds which has a spring（弹簧） that moves the bullets into place for firing.Firearms known as revolvers have a cylinder with holes that the bullets are loaded into.Modern guns are usually loaded with a magazine and are called automatic loading.