Backtrace technique
[计] 回溯技术
🧩 词语组成解析
[计] 回溯
🗣️ 情景例句
I reckon that all rock songs are rubbish.
我觉得所有的摇滚乐都是垃圾。
All things are difficult before they are easy.
凡事必先难后易。
How many of you are making the trip?
你们有多少人去旅行？