VOA慢速英语:科学家称许多“好”昆虫正在消失

bother – v. annoy, worry or cause problems for someone

sting – v. produce a small but painful injury by making a small hole in the skin

ecosystem – n. all the plants, animals and people living in an area considered their environment

virtually – adv. almost

habitat – n. the natural surroundings in which a plant or animal usually lives

insecticide – n. chemical substance used to kill insects

phenomenon – n. someone or something considered special because it is completely different or extremely unusual