They are unique in the fact that they are the only land-based crustacean.

潮虫的独特之处在于它们是唯一的陆生甲物。

The gentle giants work together to surround the tiny crustaceans with an ever-tightening spiral of bubbles.

这些温和的巨兽们协同作业，对这些微型甲物四面包抄，形成一个不断向内缩紧的气泡螺旋。

These are the little bugs (crustaceans, in fact) that are commonly thrown into confusion when you upturn a rock or log.

这些都是小虫子（实际上是甲物），要是你翻起一块岩或一根木头，它们常常会惊恐万状。

You might know this thanks to flamingos: They're born gray, but turn pink thanks to pigments called carotenoids in crustaceans they eat.

它们出生的时候是灰色的，但是由于它们食用的甲物体内叫做类素的东西变成了粉色。

It's really weird because we consume crustacea and insects branched off from crustacea.

这真的很奇怪，因为我们食用甲物和甲物的分支昆虫。

Walcott became a leading authority on trilobites and was the first person to establish that trilobites were arthropods, the group that includes modern insects and crustaceans.

但他成了三叶虫问题的一名重要权威。他最先确定三叶虫是节肢物，该属包括当代的昆虫和甲物。

Exactly why robber crabs have grown so big is a mystery, but with so few creatures making it to these remote islands, the giant crustaceans seem to have filled a niche normally taken by medium-sized mammals.

到底为什么盗蟹长得如此之大是个谜团，但是因为只有极少数的生物才能到达这些偏远的岛屿，所以这大甲物似乎填补了通常由中型哺乳类物占据的生态位。

All 7 billion human beings on Earth weigh in at a hefty 287 million tons, but just one species of krill, which is that tiny crustacean eaten by large whales, weighs a total of 500 million tons on the scale together.

地球上所有 70 亿人的体重是 2.87 亿吨，但有一种甲类物，被巨大的鲸鱼吃掉的小甲物，它们的总重量达5亿吨。