Hxen.com's tips：Every day persisted can learn English well!-->■Learn English Everyday■
focus – n. a main purpose or interest
translate – v. to change words from one language into another language
calendar – n. a document, chart, etc., that shows the days, weeks, and months of a year
virtual reality – n. an artificial world of images and sounds created by a computer that is affected by the actions of a person who is experiencing it
comfortable – adj. not causing any physically unpleasant feelings
scroll – v. to move text or images of a Web page, document, etc., up, down, or to the side on a computer screen
interact – v. to act together
