Retrieval tree
[计] 检索树
🧩 词语组成解析
retrieval
[ri'tri:vəl]
n. 收回，挽回;检索;
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
You bet!
当然！
I asked him to buy it for me, but he wouldn't.
我请他帮我买，但是他不肯。
In the middle of the classroom.
在教室中间。