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
Yes, we are, Mr. Wang. How are you going to pay?
对，我们开门。你打算如何付钱？
It's December.
现在是十二月。
The bison skins were sent by rail to cities to be sold.
野牛皮用火车运到城里出售。