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1.The octopus has eight arms, each with a capsule containing a single cell.
章鱼有八条触手，每条触手上都有一个含有单个细胞的胶囊。
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2. The spider's web is made up of many small threads that are connected to each other by a central point called the "capsule."
蜘蛛网由许多细小的线组成，这些线通过一个中心点相互连接，这个中心点被称为“囊”。
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3. The term "capsule" is often used in biology to refer to the protective structure around an organism's eggs or sperm.
术语“囊”在生物学中常用来指代生物体卵或精子周围的保护结构。