1 . 耗尽
draw on 动用,利用depletionn. 用尽,耗尽dweller n. 居住
2 . 消耗
...ar [Environmental Protection Department] 环境保护署常务通告depletion消耗;减损;损害deposit 沉积;沉降;沉积物;积聚物
3 . 贫化
depleted zone 贫化区域depletion贫化;消耗depletionlayer 耗尽层
4 . 损耗
490.dropping 滴下物兽粪491.depletion损耗492.nutrient 有营养的营养物