黑箱作业 hēixiāngzuòyè lack of transparency Definitions Defs Origin Strokes Stroke Words Sentences Sents 黑箱 hēixiāng noun black box a system or process viewed in terms of its inputs and outputs without knowledge of its internal workings, as in computing or science作业 作業 zuòyè to operate to engage in a physical task, operation, or production activity; to work
