365bet中国官方网站

  • word of the day

    heterocercal fin

    heterocercal fin - 365bet中国官方网站 definition and meaning for word heterocercal fin

    Definition
    (noun) a tail fin with unequal lobes in which the vertebral column turns upward into the larger lobe as in sharks

  • Word used in video below:
    text: let me fin
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