dorsal

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a modified dorsal fin,
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a modified dorsal fin, 是一种改良后的背鳍

modified dorsal fin a
To herd their prey, the predators raise their huge dorsal fins.
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To herd their prey, the predators raise their huge dorsal fins. 旗鱼张开大大的背鳍来把猎物赶到一起

dorsal fins raise huge prey predators herd their the to
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