gravels
n．砂砾，碎石：由多个小石头组成的松散石子，通常用于铺设道路、铁路轨道等。
例句
The Pleistocene superficial geology comprises well-bedded sandy gravels with occasional thin beds of sand.
更新世浅层地质为层状砂质砾石，偶有细沙层。
After completion of whole basic setup; I'd decided to make gravels.
经过整个基础设置完成后，我决定开始制作砾石。
Then he started weeping till his tears wetted the gravels of the ground.
然后，他开始哭泣，直至他的眼泪浸湿了砾石的地面。
