急需一篇外贸范文，关于眼镜的

Spectacles are used to protect or aid the eye sight. Therefore, if we do not want to wear any short or long sighted glasses, we have to take care of our eyes. However, I would still advice people to wear sun glasses to protect their eyes from ultra-violet rays. If not, under power ultra violet exsposure, our eyes can be impaired. By that time you cannot enjoy watching girls or guys without spectalces