Undirected tree
[计] 不定向树
🧩 词语组成解析
a. 未受指导的, 无姓名和地址的
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
Bottoms up!
干杯！
He who would search for pearls must dive below(or deep).
欲寻珍珠，须潜水下。
This pressure must be under control,
这种压力必须加以控制，