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
About forty minutes, I think.
我想大约40分钟。
How is Helen?
海伦好吗？
'And where were you at the time?'
“那你当时在什么地方？”