cobble stone

例句：

1. 1.The cobblestone path leads to the old town square.
   这条鹅卵石铺成的小路通向老城广场。
2. 2.The cobblestones are slippery and can be dangerous.
   这些鹅卵石很滑，可能会很危险。
3. 3.The cobblestones were laid down over a hundred years ago.
   这些鹅卵石是在一百多年前铺设的。