然后将玩具卡车轮胎涂上红色颜料，这样当它碾过包装纸的时候就可以留下轮胎的痕迹。

Then dipping toy truck tires into red paint roll them along the paper making tire tracks.

youdao

然后将玩具卡车轮胎涂上红色颜料，这样当它碾过包装纸的时候就可以留下轮胎的痕迹。

Then dipping toy truck tires into red paint roll them along the paper making tire tracks.

youdao