VOA慢速英语:New Electronic Glasses Improve Vision for Legally Blind

adjust - v. to change something in a minor way so that it works better​

autofocus - n. a device that focuses a camera or other piece of equipment automatically.​

bombard - v. to hit or attack something or someone constantly or repeatedly​

breakthrough - n. an important discovery that happens after trying for a long time to understand or explain something​

impaired - adj. to make something weaker or worse​

insurance - n. an agreement in which a person makes regular payments to a company and the company promises to pay money if the person is injured or dies, or to pay money equal to the value of something, such as a house or car, if it is damaged, lost, or stolen​

nausea - n. the feeling you have in your stomach when you think you are going to vomit​

peripheral - n. of or relating to the area that is to the side of the area you are looking at​

screen - n. the usually flat part of a television or computer monitor that shows the images or text​