| 单词 | 鹦鹉螺 |
| 释义 | DEFINITIVE EXAMPLES 权威例句〔ammonite〕The coiled, flat, chambered fossil shell of an extinct mollusk belonging to the class Cephalopoda, which was abundant in the Cretaceous period.菊石，鹦鹉螺化石：已灭绝软体动物的螺旋形、扁平的化石外壳，属头足纲动物，大量存在于中生代美国传统〔nautiloid〕A mollusk of the subclass Nautiloidea, which includes the nautiluses and numerous extinct species known only from fossils.鹦鹉螺软体动物：鹦鹉螺目亚纲的一种软体动物，包括鹦鹉螺和不可数计的仅从化石得知的绝迹的种类美国传统〔nautilus〕The paper nautilus.纸鹦鹉螺美国传统〔siphuncle〕A tubelike structure in the body of a shelled cephalopod, such as a nautilus, extending through each chamber of the shell.体管：通过外壳中每一腔的有壳头足类（如鹦鹉螺）体内的管形结构美国传统 |
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