Hxen.com's tips：Every day persisted can learn English well!-->■Learn English Everyday■
sweat - n. the clear liquid that forms on your skin when you are hot or nervous
nervousness - n. the state of being worried or afraid
interactive - adj. designed to respond to the actions, commands, etc., of a user
artificial intelligence - n. an area of computer science that deals with giving machines the ability to seem like they have human intelligence
original - adj. happening or existing first or at the beginning
exhibit - n. an object or a collection of objects that have been put out in a public space for people to look at : something shown in an exhibition
