n.腕足动物

Brachiopods are marine animals that have been around for over 500 million years.
腕足动物是一种已经在地球上存在了超过5亿年的海洋生物。
The brachiopod shells can be found in various sizes and shapes, depending on the species.
腕足动物的壳可以找到各种大小和形状，这取决于物种。
The brachiopod's two valves are hinged together by a ligament, allowing them to open and close like a book.
腕足动物的两个壳瓣通过韧带铰接在一起，就像一本书一样打开和关闭。
Fossilized brachiopods are often mistaken for bivalve mollusks due to their similar appearance.
化石化的腕足动物经常被误认为是双壳软体动物，因为它们看起来很相似。
Brachiopods were once the most abundant shelled animals in the ocean, but today they are much less common.
腕足动物曾经是海洋中最常见的有壳动物，但今天它们变得不那么常见了。
The brachiopod's feeding apparatus consists of two tentacles that extend from the lophophore, a crown-like structure.
腕足动物的摄食器官由从类似王冠状结构的口缘伸出的两个触须组成。
The brachiopod's body is divided into three parts: the pedicle, which anchors it to the substrate, the mantle, and the visceral mass.
腕足动物的身体分为三个部分：柄，它将身体固定在基底上；外套膜；以及内脏团。
Some brachiopods are still alive today, and they can be found in various habitats, including shallow waters and deep-sea environments.
一些腕足动物至今仍然活着，它们可以在各种生境中找到，包括浅水区和深海环境。
Brachiopods are filter feeders, meaning they obtain their nutrients by filtering water through their feeding apparatus.
腕足动物是滤食性动物，这意味着它们通过摄食器官过滤水来获取营养。
The study of brachiopods is known as brachiopodology, a branch of paleontology.
腕足动物的研究被称为腕足动物学，它是古生物学的一个分支。