“石砾”造句
常常在排水瓦管周围铺一层粗
石砾.
A layer of coarse gravel is often placed around the drain tile.
颗粒大于2毫米的划归
石砾.
Particles larger than two millimeters are classed as gravel.
随后,他听到她的脚步声离开他, 超过废
石砾,渐渐远去.
Then he heard her footsteps go away from him, over the rubble.