| 1. | This manuscript dates back to the 8th century .
这份手稿可追溯到8世纪。 |
| 2. | The legislation was made retrospective .
该项法规具有追溯效力。 |
| 3. | The story goes back many years now .
这故事可追溯好多年以前。 |
| 4. | The story goes back to the middle of the nineteenth century .
故事追溯到19世纪中叶。 |
| 5. | The origins of ethology can be traced back to darwin .
人种学的起源可以追溯到达尔文。 |
| 6. | 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。 |
| 7. | Concern for fracture has surely existed back to antiquity .
有关断裂的问题显然要追溯到古代。 |
| 8. | In retrospect all successful policies seem preordained .
追溯一切成功的政策，看来都有其预兆。 |
| 9. | Harnessing the wind to generate electricity dates back to 1890 .
利用风来发电可以追溯到1890年。 |
| 10. | The modern clinical use of curare probably dates from 1932 .
箭毒的现代临床应用可追溯至1932年。 |
