VOA慢速英语:Environmentalists Worry about Zimbabwe Wetlands

comprehensive – adj. including many, most, or all things

conservation – n. protection of animals, plants, and natural resources or to prevent the loss or waste of natural resources

sector – n. an area of an economy; a part of an economy that includes certain kinds of jobs

shopping mall – n. a large building or group of buildings with many different stores

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