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. (飞机的)黑匣子; 用于记录飞机飞行的电子仪器

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; 工作原理复杂难懂的系统或仪器[usu sing]

They were part of the black box associated with high-flyer management development. 它们曾经是高级管理开发的黑箱的一部分。