... 霍氏海豚属 fraser's dolphin 鼠海豚属 common porpoises; harbor porpoises 眼斑海豚属 spectacled porpoise ...
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In the 18th century, porpoises were described as so common they sometimes darkened the sea as they rose to draw breath.
在18世纪，鼠海豚被描述为非常普遍的，他们有时使海水变黑，因为它们生长是靠喘气。
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