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
Do you know where the nearest post office is?
你知道最近的邮局在哪儿吗？
I'm going to but two gallons.
我要买两加仑。
Pity we live so far from the sea.
真遗憾我们住得离海这么远。