Pearls contain a mixture of protein and calcium carbonate secreted by certain types of molluscs.

珍珠是某些类型的软体动分泌的碳酸钙同蛋白质一起构成的。

Most crocodilians, he reminded people, preferred to dine on fish or molluscs rather than farmers.

他提醒人们，大多数鳄鱼宁愿吃鱼或软体动而不愿吃农夫。

A giant fish needs a moderately-sized mollusc, thousands of miles away.

一条体型庞大的鱼会需要一种中等大小，远在千里之外的软体动。

In the Pantanal, there really is plenty for everyone, and it's all thanks to a mollusc.

在潘塔纳尔，食真的很充足这全都一种软体动的功劳。

Of course, molluscs are vital links in the complex chain of life. - Hm.

当然 软体动是复杂生链中的关链接 - 嗯。

There are more species of molluscs in the ocean than any other animal phylum.

海洋中软体动种类远超其他动门。

Was it me and my mollusc friends, with our amazing mantles and single foot?

是我和我的软体动朋友吗？ 我们有不可思议的外套膜和单足？

They were as two horns which the sluggish heath had put forth from its crown, like a mollusc, and had now again drawn in.

两个人好像是软体动一般懒怠的荒原伸出来的一对触角，现在又把它们缩了回去。

Algae and plankton, corals and kelp, jellyfish, molluscs, crustaceans, fish  and whales… the abundance of life here equals any found on land.

藻类和浮游生、珊瑚和巨藻、水母、软体动、甲壳动、鱼类和鲸类… … 这里的生度堪比陆地上的任何地方。

Most of the main groups of the animal kingdom—arthropods, brachiopods, coelenterates, echinoderms, molluscs and even chordates, the branch from which vertebrates went on to develop—are found in the fossil beds of the Cambrian.

人们在寒武纪群落里发现了动王国的主要动集群，包括腕足、腔肠、棘皮、软体和脊索（脊椎动进化的分支）。

Their journey from small, passive molluscs to sleek, voracious predators took hundreds of millions of years of trial and error -- from developing shells to survive, to finally learning to thrive without them.

它们从小型被动的软体动进化为光滑凶猛的捕食者，经历了数亿年的试错过——从发育壳来生存，到最后学会在没有壳的情况下繁荣发展。

That encourages the growth of planktonic algae, and thus of everything that feeds on such plankton, or feeds on what feeds on them, including jellyfish, and also various molluscs and crustacea that loggerheads enjoy as an appetiser.

这有利于浮游藻类生长，因此也有利于以这些浮游生为食的动，或以这些动为食的动生长，包括水母，还有各种各样的软体动和甲壳动，这些都是红海龟的最爱。

But by the late Cambrian, one mollusc known as Plectronoceras had acquired a couple of adaptations that marked the beginning of a brand new form of transportation -- and a whole new kind of mollusk.

但到了寒武纪晚期，一种名为佩勒托诺角石的软体动获得了一些适应性特征，标志着一种全新的移动方式——以及一种全新类型的软体动的开始。

His undoing began when a committee of the Royal Society-a committee of which he happened to be chairman decided to award him its highest honor, the Royal Medal, for a paper he had written on an extinct mollusc called the belemnite.

英国皇家学会的一个委员会——欧文恰好是该委员会的主席决定授予他最高的荣誉：英国皇家勋章，表彰他写的一篇关于一种名叫箭石的、已经绝种的软体动的论文。

In early fish-like vertebrates more than 500 million years ago; in a common ancestor of arthropods, such as insects, spiders and crustaceans, at around the same time; and then in the cephalopod molluscs around 300 million years ago.

在 5 亿多年前的早期类鱼脊椎动中；节肢动的共同祖先，例如昆虫、蜘蛛和甲壳类动，大约同时出现；然后是头足类软体动大约 3 亿年前。