Backtrace technique
[计] 回溯技术
🧩 词语组成解析
[计] 回溯
🗣️ 情景例句
He was very helpful to me, remember?
他帮过我大忙， 记得吗？
Reap as (or what) one has sown.
自食其果。
When he denied the train's existence,
他说根本没有这趟车。