Hxen.com's tips：Every day persisted can learn English well!-->■Learn English Everyday■
orchestra – n. a large group of musicians who play different instruments together
composer – n. someone who writes music
conductor – n. person who leads a group of musicians or singers
artificial intelligence – n. the development of computer systems with the ability to perform work that normally requires human intelligence
metaphor – n. a way of describing something by comparing it with something else that has some of the same qualities
crazy – adj. extremely enthusiastic or excited
