Any of numerous cold-blooded aquatic vertebrates of the superclass Pisces, characteristically having fins, gills, and a streamlined body and including specifically.

鱼纲冷血水生脊椎动物中的任意一种，具有鳍、鳃和流线体型，尤指包括。

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We have several guests today, including one with wings, flippers, and fins.

我们有几个客人今天，其中包括与翅膀，蛙鞋，和鱼翅。

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While fins are still being cut off sharks at sea, several countries including Canada, the US and the European Union have tried to restrict this by law.

BBC: Shark kills number 100 million annually, research says

The exterior also utilizes a flat underbody (including a large front flat floor cover, electric motor area undercover, front undercover and rear diffuser with fins) to help manage airflow under the vehicle.

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