depletion for wasting assets

例句：

1. 1. The company's profitshave been depleting steadily since therecession began.
   自经济衰退开始以来，这家公司的利润一直在持续减少。
2. 2. Thegovernment has to deplete its reserves of oilbefore it can meet its energy needs.
   政府必须在满足其能源需求之前耗尽其石油储备。
3. 3. The mine is running lowon supplies and will soon be depleted of its resources.
   该矿的供应正在减少，很快就会耗尽其资源。