haul logs造句

• Elephants are hauling logs from a forest
  象群在把木材从森林里拖出来。
• The study result indicated that thinning cost was determined mainly by location of forestland , the number of thinned trees and whether or not hauling logs from forest
  研究结果显示，疏伐成本主要取决林地之地区别、是否搬出疏伐木以及搬出株数。