慢速英语:Study Finds 182 Tigers Left in World's Biggest Natural Habitat

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census – n. an official count of a population

endangered– adj. threatened; seriously at risk of disappearing

extinction – n. the state or process of a species or population dying out

poach – v. to hunt or kill an animal illegally

barge – n. a flat-bottomed boat for carrying freight, typically on canals or rivers

habitat – n. natural home or territory