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1. The sperm whale is the largest living animal in the world.
精子鲸是世界上最大的现存动物。
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2. The sperm whale's unique mating ritual has been studied for decades.
精子鲸独特的交配仪式已经研究了几十年。
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3. The sperm whale's baleen plates are used to filter food particles from water.
精子鲸的齿板用来过滤水里的颗粒物。