VOA慢速英语:Scientists Race to Save World's Coral Reefs

marine – adj. of or relating to the sea or the plants and animals that live in the sea

undermine – v. to make (someone or something) weaker or less effective usually in a secret or gradual way

proportion – n. an amount that is a part of a whole

dive – v. to jump into water with your arms and head going in first

fabric – n. material or the basic structure of something

algae – n. simple plants that have no leaves or stems and that grow in or near water

equator – n. an imaginary circle around the middle of the Earth that is the same distance from the North Pole and the South Pole

breed – v. to keep and take care of animals or plants in order to produce more animals or plants of a particular kind