1N-UNCOUNT 检索 The retrieval of information from a computer is the process of getting it back. 检索
...electronic storage and retrieval systems.
电子存储和检索系统
2N-UNCOUNT 取回;找回 The retrieval of something is the process of getting it back from a particular place, especially from a place where it should not be. 取回;找回
Its real purpose is the launching and retrieval of small aeroplanes in flight. [+ of]