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奥杜邦的圣诞鸟数量比以往任何时候都多
2019-12-25来源:和谐英语
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conservation – n. the protection of animals, plants, and natural resources
passionate – adj. having, showing, or expressing strong emotions or beliefs
extinction – n. the state that results when something (such as a plant or animal species) has died out completely
contribution – n. something that is given to help a person, a cause or something else
backyard – n. an area of grass behind someone's house
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