eggshell

名词 eggshell:

1. the exterior covering of a bird's egg
   同义词：shell

egg.shell

n.（名词）
The thin, brittle, exterior covering of the egg of a bird or reptile.
卵壳：鸟或爬虫的薄而易碎的卵外壳
Color A pale yellow to yellowish white.
【色彩】 淡黄褐或黄白色

【引伸】
egg.shell.
adj.（形容词）