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
Yes. I'm sorry, but how do you spell your last name, sir?
好的，不过对不起，先生你的姓怎么拼？
Whatever I do, I will do in my power.
无论我做什么事，我都尽力而为之。
Nice to see you. Please come in. This way, please.
很高兴见到你，进来吧！请这边走。