n.［动］腹足动物
A gastropod of the subclass Pulmonata. 有肺的腹足纲动物
Any marine gastropod in the order Nudibranchia. 裸鳃目的海生腹足类动物的统称。
Either of the margins of the aperture of a gastropod shell. 腹足纲软体动物缺口的两个边缘中的任一个
The inner margin of the opening of a gastropod shell. 唇状部分腹足纲软体动物贝壳开口处的内部边缘。
A spiral formation, such as one of the whorls of a gastropod shell. 螺旋形一种螺旋形状，如一个涡螺壳上的螺旋
The outer margin of the opening of a gastropod shell. 孔缘腹足纲的软体动物的贝壳的壳口外缘。
