Backtracking
[计] 回溯法
🗣️ 情景例句
Most of the building in this town are rather unattractive, but this church is an exception.
这个城市中大部分建筑都不太好看，但这座教堂是个例外。
The man is a space scientist.
这个人是太空科学家。
To her horror he said that she was two hours too soon.
搬运工说她早到了两个小时，她听后大吃一惊。