bank-run gravel

例句：

1. 1. The construction crew was busy hauling the bank-run gravel for the new road.
   建筑工人正在忙着搬运新道路所需的银行运行砾石。
2. 2.The riverbed was littered with bank-run gravel and pebbles.
   河床被银行运行砾石和鹅卵石覆盖。
3. 3. The builders were using bank-run gravel to level the ground before laying down asphalt.
   建筑者在使用银行运行砾石平整地面后铺设沥青。