operculum

基本解釋

A flaplike covering, such as an operculum.
片狀蓋，例如蒴蓋
The shell rim joining the operculum was thick and prominent.
看不出蟲齡間的皮棘差異。
Capsules dehiscent by an operculum slightly distal to middle.
通過一個(gè)蓋稍上部至中部開裂的蒴果。
If you do, and must return your good wishes and happy operculum laugh!
如果你做到了，回報(bào)你的一定是美好的祝愿，幸福的笑厴！
Cells in the right parietal operculum operate as we act in response to other's gestures.
當(dāng)我們對(duì)他人的手勢(shì)作出反應(yīng)時(shí)，起作用的是我們右頂骨的細(xì)胞。

the hard bony flap covering the gill slits in fishes
the bony plate in certain gastropods covering the opening of the shell when the body is withdrawn