pebble
n. /ˈpebl/ B2
鹅卵石；小石子
A small, round, smooth stone, the kind you find by water.
仙境例句
A round little pebble lay at the bottom of the pool, smooth as glass.
池底躺着一颗圆圆的小卵石，像玻璃一样光滑。
原著这一句
Alice noticed with some surprise that the pebbles were all turning into little cakes as they lay on the floor, and a bright idea came into her head.
爱丽丝有些惊讶地发现，落在地板上的石子居然都变成了小点心，脑海里随即冒出了一个好主意。
卡罗尔原著 · 第 4 章