n.沙砾,碎石;砾石;[医]结石;
例句:
Her feet scrunch on the gravel.
她的脚喀嚓喀嚓地踩在沙砾上。
Gravel is an unconsolidated mixture of rock fragments or pebbles.
砂砾是砾石岩石碎片或卵石的松散的混合物.
The road is covered with gravel.
这路用砾石铺成.