book depreciation

例句：

1. 1. The book's value has decreased significantly due to the market conditions.
   由于市场状况，这本书的价值已经显著下降。
2. 2. The publisher is considering a new strategy for managing the book depreciation process.
   出版社正在考虑一个新的策略来管理图书折旧过程。
3. 3.The book depreciation rate is calculated based on the number of copies sold and the price per copy.
   图书折旧率是根据销售的副本数量和每份副本的价格来计算的。