They had thin, light-weight exoskeletons that helped them move faster, and flattened tails called telsons that gave them extra swimming power.
它们的外骨骼又薄又轻, 可以帮助它们更快地移动,而被称为尾节的扁平尾巴则赋予它们额外的游泳能力。
单词 | telson |
释义 |
telson
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