多年以来，美国海洋生物学家Pitman足迹遍及世界各大河流和海洋，搜寻稀有的海豚和鲸鱼。
For years, Mr. Pitman, the U.S. Marine ecologist, has searched the world's rivers and oceans for rare species of dolphins and whales.
简卢布琴科，运行着美国国家海洋和大气管理局的备受尊重的海洋生物学家，他说这些烟缕确实存在。
Jane Lubchenco, the respected Marine biologist who runs the National Oceanic and Atmospheric Administration, has said that plumes undoubtedly exist.
蕾切尔·卡逊是美国著名的海洋生物学家和畅销书作家。
Rachel Carson is a famous Marine biologist and bestseller writer of America.
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