n. rock fragments and pebbles
v. cover with gravel
n. 砂砾, 碎石
[医] 沙砾, 尿沙
1. The driveway is covered with gravel to prevent mud.
车道上铺满了碎石，以防止泥泞。
2. We used gravel to make a path through the garden.
我们用碎石在花园里铺了一条小路。
3. The children liked to play with the gravel at the playground.
孩子们喜欢在游乐场的碎石上玩。