Unsaturated tree
[计] 非饱和树
🧩 词语组成解析
a. 没有饱和的, 不饱和的
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
He speaks French and English with equal ease.
他说法语和英语都一样自如。
All is not gain that is put in the purse.
放入钱包的钱财，并非都是应得的。
Opportunity knocks but once.
机不可失，时不再来。