1. have downloaded that free app 已经下载了免费app
2. the United Republic of Tanzania 坦桑尼亚联合共和国
3. the process of building 建造的过程
4. from overseas 从国外
5. an exit of the house 房子的一个出口
6. complete the fact sheet 完成这张事实清单
7. the Xuanyuan Mirror 轩辕镜
8. on the roof 在屋顶上
