文章主要讲的是隐形眼镜如果可以像望远镜一样，可是放大或缩小所看到的物体，就更方便了。这种隐形眼镜只适合于健康的眼睛。下面前程百利小编带大家一块看一下这篇托福听力背景材料中出现的生词和疑难句，正在备考托福听力的同学可以参考一下。
Binoculars are handy, whether you’re birding, boating or just sitting in the cheap seats. They can also be bulky, heavy and a pain to carry around. But imagine if contact lenses could be made to magnify images and serve as tiny, wearable binoculars.
Swiss and U.S. researchers are working on just such an optical prosthetic, with funding from the U.S. Defense Department.
The device is a very thin reflective telescope inside a rigid contact lens just 1.5 millimeters thick. When worn with a special pair of glasses, the effect is said to be like looking through a pair of low-magnification binoculars.
The lenses let you switch between normal vision and a view that’s magnified nearly three times with the wink of an eye. The glasses help the contacts distinguish between intentional winks and involuntary blinks.
The research team unveiled their latest prototype at the recent American Association for the Advancement of Science annual meeting. [Eric Tremblay, Smart Glasses and Telescopic Contact Lenses for Macular Degeneration]
The technology could be worn on healthy eyes, which could mean checking certain baseball players to make sure they’re not wearing a pair. But it’s really designed to help the visually impaired, especially those with age-related macular degeneration. If the system succeeds, it could offer a nonsurgical option to help improve failing vision.
疑难词汇：
Binocular 双眼望远镜
Magnify vt. 放大;赞美;夸大vi. 放大;有放大能力
Prosthetic 假体的
Unveiled adj. 裸露的;公布于众的v. 公开(unveile的过去分词);原形毕露
Prototype 原型;标准;模范
Nonsurgical 非外科的
长难句解析：
1. When worn with a special pair of glasses, the effect is said to be like looking through a pair of low-magnification binoculars.
难句类型:
When 引导的从句
句子主干：
the effect is said to be like looking through a pair of low-magnification binoculars
难句拆分;
When引导的状语从句，翻译为“当…的时候”
2. The technology could be worn on healthy eyes, which could mean checking certain baseball players to make sure they’re not wearing a pair.
难句类型;
Which 引导的非限制性定语从句
句子主干:
The technology could be worn on healthy eyes
难句拆分;
Which 引导的非限制性定语从句修饰整个句子
好了，以上就是前程百利小编为大家整理的托福听力背景材料中学单词+疑难句之神奇的望远镜的内容，希望在备考的路上助大家一臂之力。最后，小编祝大家在托福考试中取得好成绩！
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