Backtracking point
[计] 回溯点
🧩 词语组成解析
[计] 回溯法
🗣️ 情景例句
Oh. I have the key. Grandpa sent it to me.
啊。钥匙在这里。爷爷寄来给我的。
What kinds of vegetables do you have?
你吃什么样的蔬菜？
Four years later, she left the children's home and entered an institution for the blind, where she learnt braille.
4年之后，她离开孤儿院，进入一盲人学校，学习布莱叶盲文。