属于鳍足亚目的海洋哺乳动物,包括海象、耳海豹和无耳海豹,其特征是四肢演化为鳍状肢。
pinnipeds — plural of pinniped
属于鳍足亚目的海洋哺乳动物,包括海象、耳海豹和无耳海豹,其特征是四肢演化为鳍状肢。
属于鳍足亚目的海洋哺乳动物,包括海象、耳海豹和无耳海豹,其特征是四肢演化为鳍状肢。
A marine mammal belonging to the parvorder Pinnipedia, comprising walruses, eared seals and earless seals, characterized by four limbs modified into flippers.
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