VOA慢速英语:哥伦比亚小镇河马数量增加

infamous – adj. famous for being bad

cartel – n. a group that agrees to fix prices and control trade in a product or industry

estate – n. a large area of land in the countryside that is owned by a person or organization

predator – n. an animal that hunts and kills other animals for food

tourist – n. a person who travels to a place for pleasure

humane – n. kind, especially towards people or animals that are suffering

sterilize – v. to perform an operation making it impossible for someone to have children

surgical – n. relating to a medical operation