Subproblem tree
[计] 子问题树
🧩 词语组成解析
[计] 子问题
tree
[tri]
n. 树;木料;树状图;宗谱;
vt. 把…赶上树;使处于困境;把鞋型插入（鞋内）;
🗣️ 情景例句
My name is Wang Feng and I'm calling to cancel plane ticket.
我叫王峰，我想取消我预定的飞机票。
Good morning, dear.
早，亲爱的。
He told me to unpack my things and then come down to dinner.
他让我打开行装后下楼吃饭。