| 21. | a voice without (a trace of) accent |
| 不带(丝毫)地方口音的声音
|
| 22. | trace one's lineage back many centuries |
| 回溯许多世纪以探求自己的宗谱
|
| 23. | not a trace of vanity in her behaviour |
| 在她的举止中毫无虚荣表现
|
| 24. | trace the beginning of sb.'s illness back to a certain date |
| 追溯某内开始发病的日期
|
| 25. | trace one's missing baggage |
| 查寻遗失的行李
|
| 26. | trace [track] a wild beast |
| 追踪野兽
|
| 27. | trace sth.to its birth |
| 追溯某事的起源
|
| 28. | speak without ( a trace of ) accent |
| 说话不带一丝地方口音，语音纯正
|
| 29. | trace the author of a report |
| 查找一份报告的作者
|
| 30. | trace an event back to its causes |
| 追究一个事件的起因
|