amplify, enlarge, stretch, magnify, reinforce, expand的区别

amplify v.扩大，增加，尤其指通过增强电压或电流使声音扩大；补充叙述(故事、事件等)。

We must ask you to amplify your statement.
我们得请你对你的说法作进一步的说明。

enlarge v.扩大，多指具体物品如相片的放大。

enlarge photograph 放大照片　

enlarge a house 扩建房屋

stretch v. (有弹性地)伸展，延伸，并有可能超过限度；伸长、伸出(身体某部位)并绷紧肌肉(尤指在放松后或为了够着某物)。

The pullover stretched after I had worn it a few times.
这件套头毛衣我穿了几次之后就撑大了。

Having finished their morning work, the clerks stood up behind their desks, stretching themselves.
完成了早间工作之后，职员们站到桌子后面伸伸懒腰。

magnify v.放大，指用透镜或显微镜使物体看上去大一些。

His eyeglasses magnify words so he can read them.
他借助眼睛把字放大以便能够阅读。

reinforce v.增援，加固。

expand v.指范围、体积的扩大、增大，也可以指内容或细节的充实。

The balloon expanded, then exploded.
气球先是膨胀，然后就爆破了。