勾出

wǒ gōu chū le jiào dà xíng jiàn zhù de lún kuò

我勾出了较大型建筑的轮廓。

I have blocked in the shapes of the larger buildings.

cuò wù yòng lán bǐ gōu chū le

错误用蓝笔勾出了。

Errors are scored in blue ink.