例句與造句

1. since the pebble structure is of big pellet easy to be permeated ant it is difficult to smash and drill, the appliance with big diameter and deep cast-in-place pile has been greatly restricted
   卵石地基具有顆粒大、透水性強(qiáng)、進(jìn)尺和破碎困難、容易垮孔等困難，限制了大直徑深孔鉆孔灌注樁在其中的應(yīng)用。
2. It's difficult to find pebble structure in a sentence. 用pebble structure造句挺難的