v. 开拓( reclaim的现在分词 ); 要求收回; 从废料中回收（有用的材料）; 挽救

v claim back

v reuse (materials from waste products)

v bring, lead, or force to abandon a wrong or evil course of life, conduct, and adopt a right one

v make useful again; transform from a useless or uncultivated state

v overcome the wildness of; make docile and tractable