Backtrace technique
[计] 回溯技术
🧩 词语组成解析
[计] 回溯
🗣️ 情景例句
Would a professional photographer be without a picture?
一位专业摄影师会没有照片吗？
In college I majored in history, What was you major?
大学时我主修历史，你主修什么呢？
He noticed that the straight part of the dance was different in the afternoon from what it had been in the morning.
他注意到下午舞蹈的直线部分与上午的不一样。