磨石砂砾 mó shí shā lì

DEFINITIONS

  1. millstone grit
  2. coarse sandstone

CHARACTERS

磨 mó
HSK 6
grind; polish; rub; wear out; a millstone
石 shí
HSK 5
stone, rock, mineral; rad. 112
砂 shā sand; pebbles, gravel; gritty
砾 lì gravel, pebbles