提前铺好一块正方形的面粉然后用吸尘器路过吸走一部分 条状的面粉，
然后在这块面粉的旁边倒出来吸尘器里吸走 的原本的部分和形状
Lay out a square piece of flour ahead of time then pass over it with a vacuum cleaner to suck up a portion of the strips, then pour out the original portion and shape of the sucked up pieces next to this piece of flour.