black box

1. N-COUNT A black box is an electronic device in an aircraft that records information about its flights. Black boxes are often used to provide evidence about accidents. (飛機(jī)的)黑匣子; 用于記錄飛機(jī)飛行的電子儀器

2. N-COUNT You can refer to a system or device as a black box when you know that it produces a particular result but you have no understanding of how it works. 黑匣子; 工作原理復(fù)雜難懂的系統(tǒng)或儀器[usu sing]

They were part of the black box associated with high-flyer management development. 它們曾經(jīng)是高級管理開發(fā)的黑箱的一部分。