[] [] a complicated piece of equipment or process that you know produces particular results, but that you do not completely understand 黑匣子◆The decision-making process is seen as a black box—things go in and decisions come out. 决策过程被看作是一个黑匣子：将东西放进去，决策就出来了。◆black-box economic models 黑匣子经济模型