Signed tree
[计] 符号表示的树
🧩 词语组成解析
signed
[saind]
adj. 有符号的，有正负之分的;
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
I have worked hard at my major subject.
我对主修课特别用功。
You can't always get what you want.
天不从人愿。
Topsail is a famous little boat.
“涛波赛”号是艘有名的小艇，