per cent of spring wood

例句：

1. 1. The company's profit increased by 20% last year.
   去年公司的利润增加了20%。
2. 2. The price of the product has decreased by 5% compared to last year.
   与去年相比，该产品的价格下降了5%。
3. 3. The sales per cent of this product is increasing day by day.
   这款产品的销售额正在逐日增加。