VOA慢速英语:科学家发现了导致蝗虫成群的化学物质

swarm – n. a very large number of insects moving together

migratory – adj. moving from place to place at different times of the year

antenna – n. a thin, sensitive organ on the head of an insect, crab or similar animal

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

lure – v. to cause a person or animal to go somewhere

solitary – adj. alone, separated from people