operculum

A lid or flap covering an aperture, such as the gill cover in some fishes or the horny shell cover in snails or other mollusks.

鳃盖覆盖在一孔或缝隙上的盖，如一些鱼类的鳃或覆盖在蛇或其它软体动物身上的角质壳

gastropods having the gills when present posterior to the heart and having no operculum: includes sea slugs; sea butterflies; sea hares.

腹足动物，有鳃，位于心脏后面，无鳃盖；包含海蛞蝓；海蝴蝶；海兔。

operculate seasnail of coastal waters with a short spiral shell.

滨海水域中有鳃盖骨的海螺，螺壳短而呈螺旋形。

A North American sunfish(Lepomis gibbosus)having a rounded, mostly orange body with a bright red spot on each gill cover.

瓜仁太阳鱼北美洲的一种有桔色的圆体且每侧鳃盖上有一红色亮点的太阳鱼（驼背鳞鳃太阳鱼）

Any of several marine fishes of the family Trachinidae, having venomous spines on the gill cover and first dorsal fin.

龙鳖龙鳖科的几种海鱼之一，在鳃盖和第一背鳍上的许多毒刺

A gill or similar organ of respiration.

鳃鳃或类似的呼吸器官

The anterior part of a fish contains the head and gills.

鱼的前部包括头和鳃。

The gills of a fish correspond to our lungs.

鱼的鳃相当于我们的肺。

Pacific lamprey

太平洋鳗鱼, 楔齿七鳃鳗

Fish take in oxygen through their gills.

鱼通过鳃摄取氧气.

A scanning electron microscopical observation of gill structure of largemouth bass Micropterus salmoides and blue gill Lepomis macrochirus

大口黑鲈和蓝鳃太阳鱼鳃结构的扫描电镜观察

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

A common edible sunfish(Lepomis macrochirus) of North American lakes and streams.

蓝鳃太阳鱼北美洲河湖中一种常见的可食太阳鱼（蓝鳃太阳鱼）

Effects of Spacing of Gill-piece in Vertical-component Density Flow Water-sediment Separation Device on Water Sand Separation

垂向异重流式水沙分离鳃鳃片间距对水沙分离的影响研究

a flat net suspended vertically in the water to entangle fish by their gills.

在水中垂直悬浮的能缠住鱼鳃的平网。

of or relating to or characteristic of the subclass Branchiopoda.

属于、关于或具有鳃足亚纲动物特征。

It breathes in the water with its gills as other fish do,

在水中它们像其他鱼一样用鳃呼吸，

They breathe under water with the gills on the sides of their heads.

它们在水下用长在头部两侧的鳃呼吸。