细胞被负电荷覆盖，那么你要做的只要将你想要粘上去的分子带正电就可以了。

Cells are covered in negative charges, so all you have to do is make the molecules you want to stick to them positively charged.

youdao

对于任意净电荷的情况，我们都可以这样做，比如假设我们有一个带两个正电荷的分子，那么所有的形式电荷加起来应该等于正二，等等。

So we can do this for any final charge we have, if we have a molecule that has a charge of plus 2, then all of the formal charges should add up to plus 2 and so on.

youdao

所以黄道带中的孩子——白羊座，在一个关系圈中往往是活跃分子，并想成为其中的主导者。

So in a relationship, Aries, the child of the zodiac, is the motivator and wants to be the controller.

youdao

So we can do this for any final charge we have, if we have a molecule that has a charge of plus 2, then all of the formal charges should add up to plus 2 and so on.

对于任意净电荷的情况,我们都可以这样做，比如假设我们有一个带两个正电荷的分子，那么所有的形式电荷加起来应该等于正二，等等。

麻省理工公开课 - 化学原理课程节选

The molecule is net neutral, but this right end is a little bit more negative and the left end is a little bit more positive.

这分子是电中性的，但右边要带一点负电荷,而左边要带一点正电荷。

麻省理工公开课 - 固态化学导论课程节选

It's loaded with phosphates which are negatively charged.

NA分子上有很多带负电荷的磷酸根

耶鲁公开课 - 生物医学工程探索课程节选