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
What a mess!
太乱了！
A squirrel cracks the nuts.
松鼠在啃坚果.
Yes.He must remain in bed for another two days.
是的，他还必须卧床两天。