| 释义 |
o·per·cu·lum 英əʊ'pɜːkjʊləm美oʊ'pɜːkjʊləm
基本英英搭配
n.鳃盖⁵³;藓盖²¹;果盖²⁶形容词opercular副词opercularly名词复数opercula
Noun:
a hard flap serving as a cover for a the gill slits in fishes or b the opening of the shell in certain gastropods when the body is retractedvalve of operculum盖瓣介壳虫…anal operculum肛盖ovum operculum卵盖genital operculum生殖厣 |