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VOA慢速英语:5500年来最低水平!白令海冰层面积明显缩小
2020-09-10来源:和谐英语
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indigenous – adj. produced, living or existing naturally in an area
reflecting – v. to strike a surface and go back in the opposite direction
circulation – n. the movement of air or water through an area
expedition – n. a trip undertaken by a group of people for a purpose
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