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
She always talks to me as though she were my sister.
她总是以我妹妹的口气跟我说话。
Because of the type of purchase, we can only ship by road.
由于商品的性质，我方只能使用公路运输。
Yes, It was a real pity!
可不是，太可惜了。