| 1. | This manuscript dates back to the 8th century .
这份手稿可追溯到8世纪。 |
| 2. | The story goes back to the middle of the nineteenth century .
故事追溯到19世纪中叶。 |
| 3. | Rights of common go back to anglo-saxon times .
公地使用权可以追溯到盎格鲁-撒克逊时代。 |
| 4. | Concern for fracture has surely existed back to antiquity .
有关断裂的问题显然要追溯到古代。 |
| 5. | Harnessing the wind to generate electricity dates back to 1890 .
利用风来发电可以追溯到1890年。 |
| 6. | The use of wax to inhibit ozone deterioration probably goes back to 1881 .
使用蜡来抑制臭氧劣化可追溯到1881年。 |
| 7. | The fundamental thesis of this book goes back to the winter of 1919-20 .
书的基本论点可以追溯到1919-1920年冬天。 |
| 8. | The progenitor of this class of problems may date back to pre-greek times .
这类问题的先驱可以追溯到希腊以前的时间。 |
| 9. | In order to understand the man we will have to go back to an earlier day .
要懂得这个人，我们还得追溯到一个较早的时间。 |
| 10. | The use of magnets as aids to navigation can be traced back at least to the eleventh century .
磁铁用于航海，至少可追溯到11世纪。 |
