inflationary affects the measurement pf depreciation

说是 ROA 和ROE 会比较高。

这个怎么理解。 答案给的提示是 Inflation causes ROA & ROE to be too hig because the true cost of replacing the assert is not reflected by depreciation.

没明白那个解答。为什么更换费用不受折旧影响 ROA和ROE就会比较高？