To draw the limiting edge of.

划轮廓。

To state the plan of in words.

述概略。

The line that shows the outer limits or shape of figures.

外型；轮廓。

In drawing, a sketch which show the shape of figures without light and shade.

略图。

In writing or speaking, a first draft or sketch in words.

(写作或谈话之)纲要。