two core per bit

例句：

1. 1.There are two books on the table.
   桌子上有两本书。
2. 2. I need two more hours to finish this project.
   我还需要两个小时来完成这个项目。
3. 3.She has two children, one boy and one girl.
   她有两个孩子，一个男孩和一个女孩。