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。

Think of it as a black box.

把它想象成一个黑盒子。

The JVM is effectively a black box.

JVM 是一个不折不扣的黑盒。

Something like a black box.

黑匣子一类的东西。

The military staff carries the black box.

军事人员带着黑盒子。