http://www.pons.de/produkte/3-12-517841-X/（牛津大学出版社授权产品）
backtrack [美 ˈbækˌtræk, 英 ˈbaktrak] 动词 不及物动词
1. backtrack (retrace one's steps):
- backtrack
-
在《PONS词典》中的词汇
在《PONS词典》中的词汇
| I | backtrack |
|---|---|
| you | backtrack |
| he/she/it | backtracks |
| we | backtrack |
| you | backtrack |
| they | backtrack |
| I | backtracked |
|---|---|
| you | backtracked |
| he/she/it | backtracked |
| we | backtracked |
| you | backtracked |
| they | backtracked |
| I | have | backtracked |
|---|---|---|
| you | have | backtracked |
| he/she/it | has | backtracked |
| we | have | backtracked |
| you | have | backtracked |
| they | have | backtracked |
| I | had | backtracked |
|---|---|---|
| you | had | backtracked |
| he/she/it | had | backtracked |
| we | had | backtracked |
| you | had | backtracked |
| they | had | backtracked |
单语范例（未经PONS编辑处理）
This time he backtracked, claiming that the handwriting on the envelope was not his and that someone else had printed his initials on it.
en.wikipedia.org A dead end means that the team must backtrack for another plank.
en.wikipedia.org Although backtracking implementations only give an exponential guarantee in the worst case, they provide much greater flexibility and expressive power.
en.wikipedia.org Shocked government ministers were unable to backtrack on the site's existence in the face of national news coverage of the phenomenon.
en.wikipedia.org Similarly, either one or the other climber must backtrack towards the beginning of the journey.
en.wikipedia.org