What is important to remember is that the formulas represent neutral compounds where the positive and negative charges add to zero.

重要的是记住分子式是代表中性化合物，正负电荷加和为零。

youdao

The result is a double-layer distribution of charges-for example, a plane of negative heads and an adjacent diffuse cloud of positive counterions.

这就产生了电荷的一种双层结构分布——比如说一个负电荷的平面和紧邻着弥散着的带正电的相对离子云。

youdao

It’s just that the total area of sites with positive and negative charges are roughly equal (the two are typically within a fraction of a percent of each other).

只是带正负电的区域总面积是大致相当的（差别不超过千百分之一）。

youdao

The universe also contains information coded with the direction, speed and positive or negative charges of subatomic particles.

FORBES: Flatland?