per cent of summer wood

例句：

1. 1.The company's profits have increased by 20% compared to last year.
   该公司的利润与去年相比增长了20%。
2. 2.The cost of living has gone up by 5 per cent.
   生活成本上涨了5%。
3. 3. The sales figures for the new product are up by 10 per cent compared to last year.
   新产品的销售额比去年增长了10%。