amoritization period

例句：

1. 1. The company's amortization period for this asset is 5 years.
   该公司对这项资产的折旧期为5年。
2. 2. During the amortization period, the cost of the asset is gradually reduced.
   在折旧期内，资产的成本逐渐减少。
3. 3. The amortization period is calculated based on the historical data and future expectations.
   折旧期是根据历史数据和未来预期计算得出的。