That way, a vector with a negative Y coordinate, I would correspond to a negative area for this parallelogram.

这样 一个Y坐标为负的向量 就对应了这个平行四边形的负面积。

But if V is on the left of W, then the cross product is negative, namely, the negative area of that parallelogram.

但是如果V在W的左边 那么叉乘就是负的 也就是平行四边形的负面积。

In order for a molecule to be polar, there has to be a dipole moment, a separation of the charge around the molecule into a more positive area and a more negative area.

为了使分子具有极性，必须存在偶极矩，将分子周围的电荷分离为更正的区域和更负的区域。