Backtracking
[计] 回溯法
🗣️ 情景例句
Keep it. I'm buying tonight.
收着吧，今晚我付钱。
Where they saw chance, we see law.
以前他们认为是偶然的，现在我们认为是必然的。
The railway station was big, black and dark.
火车站很大，又黑又暗。