shell cover造句

例句与造句

1. 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
2. It's difficult to find shell cover in a sentence. 用shell cover造句挺难的