top-down

形容词 top-down:

1. of an approach to a problem that begins at the highest conceptual level and works down to the details

top-down

adj.（形容词）
Of or relating to a hierarchical structure or process that progresses from a large, basic unit to smaller, detailed subunits:
自顶向下的，由高至低的：等级式的结构或步骤的或与其相关的，由大的基本单位至较小的具体次单位：
例句：
a top-down description of the department`s function.
以自顶向下的方式描述部门的功能

Commanded by or originating from ones having the highest rank.
高阶命令的：由最高阶层操控的，来源于最高阶层的