老师,这道题我理解accelerated depreciation shifts depreciation expense toward the earlier years, 也理解depreciation是Noncash expense,所以要被加回;但是前期depreciation多也会导致operating income after tax变少吧?但变少的部分(有扣税)会比noncash 加回的部分少,所以最后after-tax operating cash flow还是增多的,是这么理解吗?