n.碎石
v.铺碎石；使困惑
The water is infiltrating the gravel bed. 水正渗透进碎石底层。
A lonely fisherman stood on a tuft of gravel. 一个孤单的渔夫站在碎石丛中。
Depressions are usually caused by heavy trucks passing over the gravel. 路面下沉通常是由路过铺碎石的重型卡车引起的。
