Hxen.com's tips：Every day persisted can learn English well!-->■Learn English Everyday■
orchid – n. a plant with flowers that are brightly colored and that have unusual shapes
botanist – n. one who studies the branch of science that deals with plant life
unique – adj. very special or unusual
tropical – adj. from the part of the world that is near the equator where the weather is very warm
heritage – n. the traditions, achievements, beliefs, etc., that are part of the history of a group or nation
bilateral – adj. involving two groups or countries
hybrid – adj. plant that is produced from plants of different kinds
cultivate –v. to grow and care for
