In this case, Zhao used his finger to overlay a drawing and then used a larger object, his cell phone, as an eraser.

在这种情况下，赵用自己的手指覆盖图形，然后用一个较大的对象，他的手机作为一个橡皮擦。

youdao

Patterns - Define custom patterns to use while drawing with the pencil, line, or eraser tool (instead of a single pixel).

模式-定义自定义模式时要使用的绘图铅笔，线条，或橡皮擦工具(而不是单个像素)。

youdao

Life is the art of drawing without an eraser.

生活是一门没有橡皮擦的艺术。

youdao

Once completed, the robot picked up the whiteboard, showed the finished work to the assembled CeBIT hordes, placed it back on the easel again, and then before I could call the Louvre, picked up an eraser, wiped out the drawing, and waiting for his (her?) next subject.

FORBES: CeBIT: Let's Draw, Robots!