你要画一个轮廓，不要填充。

Your drawing should be outline. Do not fill it in.

youdao

一定要记住所画的图形轮廓为黑色，无填充。

Just remember that line color is black and Fill color is transparent.

youdao

一定要记住所画的图形轮廓为黑色，无填充。

Just remember that line color is black and Fill color is transparent.

youdao