chalk out

• • 用粉笔勾画出；用粉笔标出；打草图：

    The teacher chalked out a map of Asia on the blackboard.

    老师用粉笔在黑板上画了一张亚洲地图。

  • 规划；计划；订出…纲要：

    He chalked out his plan of establishing a new course.

    他拟订了增设新课程的计划。