Hxen.com's tips：Every day persisted can learn English well!-->■Learn English Everyday■
coral reef – n. a long line of coral that lies in warm, shallow water
prescription – n. a written message from a doctor that officially tells someone to use a medicine, therapy, etc.
sunscreen – n. a lotion that you put on your skin to prevent sunburn by blocking out some of the sun's rays
tourist – n. a person who travels to a place for pleasure
toxic – adj. poisonous; containing poisonous substances
