His work is to draw up plans for an extension.

他的工作就是绘制扩建图。

youdao

After the subroutine parameter is given the origin number, the plotter controlled by computer can draw out automatically extension line, dimension line, arrowhead and write dimension figures.

当给子程序的参数赋以初值后，由计算机控制自动绘图机绘制出尺寸界线、尺寸线、箭头和注写尺寸数字。

youdao

Clinton would face a choice: Does she draw distinctions between herself and Mr. Obama and by extension, with potential candidate Vice President Joe Biden?

WSJ: Clinton Exits State Post in Strong Position