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
but when I received the letter
但是当我收到那封信
Should I go this way,or that way?
我应该这样去,还是那样？
examined a very large number of men working on aircraft carriers:
调查了许多在航空母舰上工作的人，