vt.

1. 具体指定；详细指明；明确说明[+that][+wh-]
   The directions specify how the medicine is to be used.

   说明书上规定了这药如何服用。

   The contract specifies red tiles for the roof.

   合同规定屋顶用红瓦盖。

2. 把……列入说明书（或清单等）

v.

1. identify clearly and definitely.
2. include in an architect's or engineer's specifications.