lies in their simple segmented body plan... 在于其简单的分节结构
for fussy females sometimes eat their suitors. 因为挑剔的雌性有时会吃掉求爱者
their hard exoskeletons had served as useful armor underwater. 坚硬的外骨骼在水下是有用的护甲
...their tiny filaments helped to break down rock 它们的细丝帮助将岩石分解
But they owe their rise to the fall of their greatest rivals. 但它们的崛起归功于 最强大竞争对手的灭亡
as their prey get ever more tired. 它们的猎物变得越来越疲惫
Some fish use them to protect their eggs. 有的鱼用颌来保护自己的卵
While their variety is remarkable... 虽然它们的多样性非同一般