Now this particular transformation did not change the area of the original figure, so a six-year-old who plays with this has just discovered a clever algorithm to compute the area of any given parallelogram.
现在这个特定的转换 没有改变原始图形的面积， 因此，一个六岁玩这个程序 刚发现一个聪明的算法 来计算任何给定的平行四边形的面积。