| 单词 | 头足纲 |
| 释义 | 〔cephalopod〕Of, relating to, or belonging to the class Cephalopoda.头足纲动物的：属于、关于或隶属与头足纲动物的〔dibranchiate〕A member of the order Dibranchiata, a classification formerly used for the two-gilled cephalopods, which include the octopuses, cuttlefish, and squids.二鳃目：二鳃目的一员（一种正式使用于二鳃的头足纲动物的分类），包括章鱼、乌贼和鱿鱼〔spirula〕A small cephalopod mollusk of the genusSpirula, having a spirally coiled, partitioned internal shell. 旋壳乌贼：一种旋壳乌贼 属的小型头足纲软体动物，具有螺旋盘绕的分裂内壳 〔cephalopod〕Any of various marine mollusks of the class Cephalopoda, such as the octopus, squid, cuttlefish, or nautilus, having a large head, large eyes, prehensile tentacles, and, in most species, an ink sac containing a dark fluid used for protection or defense.头足纲动物：软体动物门的一种海生软体动物，如章鱼、鱿鱼、乌贼或鹦鹉螺，有可缠绕的触须、较大的头和眼，大多数种类都有一个作保护或防卫用的容纳深色液体的内存墨囊〔hectocotylus〕A modified arm of the male of certain cephalopods, such as the octopus, functioning as a reproductive organ in the transference of sperm to the mantle cavity of the female.化茎腕，交接腕：某些雄性头足纲动物，如章鱼身上的一条变种腕，可起生殖器官的作用，把精液传送到雌性的套膜腔中〔octopod〕Any of various cephalopod mollusks of the order Octopoda, such as an octopus, having eight tentacles.八足类动物：任何一种八腕目头足纲的软体动物，有八个触脚，如章鱼〔belemnite〕A cone-shaped, fossilized internal shell of any of an extinct genus of cephalopods related to the cuttlefish.箭石：由灭绝的与乌贼有血亲关系的头足纲动物的内壳形成的尖锥状化石 |
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