| 1. | The family came over in the ark .
这一姓氏可以上溯到方舟时代。 |
| 2. | The custom traces to the time of the warring states .
这个风俗可上溯到战国时期。 |
| 3. | China's civilization stretches back four thousand years .
中国的文化可以上溯到四千年前。 |
| 4. | He traces his descent back to an old norman family .
他追踪自己的世系上溯至一个古老的诺曼家族。 |
| 5. | The sail up the breezy and sparkling river was a charming experience .
在这微风吹拂和波光闪烁的河上溯流而上，真是令人陶醉的经历。 |
| 6. | The cathedral dates back to the middle ages
该座教堂建造的时间可上溯至中古世纪。 |
| 7. | Let s trace the origins of the yrarlung river valley
我们的思绪上溯岁月之河 |
| 8. | Cures and preventions : put in explicit upcasts
治疗和预防措施：插入显式上溯造型。 |
| 9. | His ancestors ascend to the 15th century
他的祖先可上溯到十五世纪。 |
| 10. | Construction of the great wall started in the 7th century b . c
长城的修筑可上溯到公元前七世纪。 |
