| 单词 | gill cover |
| 释义 | DEFINITIVE EXAMPLES 权威例句〔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美国传统〔weever〕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美国传统 |
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