工人们将大板条箱缓慢而费力地拖过仓库地板。

The workers ___hauled the large crate across the warehouse floor.

攀登后，他们用绳子将自己缓慢而费力地拉上安全岩架。

After the climb, they used a rope to ___haul themselves up to the safety ledge.

需要好几个人才能缓慢而费力地将旧船从水里拖到岸上。

It took several people to ___haul the old boat out of the water and onto the shore.