Now that we've talked about some common questions for asking for directions, let's talk about giving directions, giving an answer.

既然我们已经讨论了一些问路的常见问题，让我们来谈谈指路，给出答案。

And then for this molecule, the electrons could be moving the opposite direction, giving this a partial positive.

然后对于这个分子，电子可能会向相反的方向移动，使其部分呈正。

From here, due to the clever design of the cell, these loose electrons can flow in the same direction, giving us an electric current -- and conveniently giving me life.

从这里开始， 由于电池的巧妙设计， 这些松散的电子可以沿同一方向流动，为我们提供电流——并方便地赋予我生命。

Because the Gaussian surface we chose was a sphere concentric with the point charge, the  electric field and the area vector were always in the same direction giving an angle of zero degrees  in the dot product.

因为我们选择的高斯表面是与点电荷同心的球体，所以电场和面积矢量始终朝同一方向， 从而在点积中产生零度角。