VOA慢速英语:新研究表明全球昆虫数量在下降

apocalypse – n. a great disaster : a sudden and very bad event that causes much fear, loss, or destruction

species – n. a group of animals or plants that are similar and can produce young animals or plants

pollinate – v. to give (a plant) pollen from another plant of the same kind so that seeds will be produced food

chain – n. a series of types of living things in which each one uses the next lower member of the series as a source of food — usually used with the

parasite – n. an animal or plant that lives in or on another animal or plant and gets food or protection from it

nectar – n. a sweet liquid produced by plants and used by bees in making honey

preserve – v. to keep (something) in its original state or in good condition

grassroots – n. the ordinary people in a society or organization : the people who do not have a lot of money and power