sum-of-the-years digits depreciation

例句：

1. 1.The company's stock price has been steadily declining since the last quarter.
   公司的股票价格自上一季度以来一直在稳步下降。
2. 2.The value of the property is decreasing due to inflation.
   由于通货膨胀，该物业的价值正在下降。
3. 3. The company's profits have been decreasing year by year.
   公司的年利润逐年下降。