Retrieval operation
[计] 检索操作
🧩 词语组成解析
retrieval
[ri'tri:vəl]
n. 收回，挽回;检索;
🗣️ 情景例句
This dog is well trained.
这只狗受过很好的训练。
Straightforward communication is usually more appreciated.
坦率地交流常常更值得推崇。
Once the oxygen content of the air had risen to 25% it was ready to burn.
一旦氧气在空气中的含量达到25%，它就要燃烧。