八倍

例句：

1. 1. The book has eight chapters.
   这本书有八章。
2. 2. We need eight people to finish the project.
   我们需要八个人来完成这个项目。
3. 3. The price of the product is eight times that of the competitor's.
   该产品的价格是竞争对手的八倍。