n.蛋壳，易碎的东西
Over time, the protein in the eggshell breaks down into its constituent amino acids.
时间久了，蛋壳中的蛋白质就会分解为其构成成分氨基酸。
" When the goose is in the eggshell there is no bone, "
“ 当鹅还在蛋壳里的时候,没有骨头. ”
The walls had been painted an eggshell white.
墙面用蛋壳漆刷成了白色。