鹅卵石

例句：

1. 1. The beach was littered with small pebbles.
   海滩上散布着许多小鹅卵石。
2. 2. The old house had been left untouched by time, with only a few pebbles missing.
   这座老房子被时间遗忘，只有几块鹅卵石不见了。
3. 3.He carefully picked up each pebble and placed it in the jar.
   他小心翼翼地捡起每一块鹅卵石，放进罐子里。