The damaged neurons regrew their long signaling tails, called axons.

受损的神经元重新长出长的信号尾，这个便是轴突。

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。

Structures near their tails called electric organs produce up to a volt of electricity, about two-thirds as much as a AA battery.

它们尾巴附近的结构称为电器官，可产生高达 1 伏的电流， 约为 AA 电池的三分之二。