Backtracking operation
[计] 回溯操作, 向后追踪操作
🧩 词语组成解析
[计] 回溯法
🗣️ 情景例句
What are you doing up this late?
这么晚你不睡在干什么？
No trouble at all.
一点儿也不麻烦。
Byrd now knew that he would be able to reach the South Pole which was 300 miles away, for there were no more mountains in sight.
伯德这时知道他能够顺利飞抵300英里以外的南极了，因为前面再没有山了。