VOA慢速英语:苹果将允许iPhone用户关闭降速功能

degrade – v. to damage the quality or condition of something

upgrade – n. a situation in which one thing is replaced by something better, newer, more valuable, etc.

feature – n. an interesting part or characteristic of something

animated – adj. produced by the creation of a series of drawings, pictures, etc.

encrypted – v. to change electronic information into a secret system of letters, numbers, or symbols to hide its meaning