rock fragment

• 碎块岩石,岩屑

rock fragment的用法和样例：

例句

1. An unconsolidated mixture of rock fragments or pebbles.
   砾石岩石碎片或卵石的松散的混合物
2. A rock fragment between 4 and 64 millimeters(0.16 and 2.51 inches) in diameter, especially one that has been naturally rounded.
   水晶石石英断片，直径4到64毫米(0.