But the researchers were able to make rubber self-heal by replacing the sulfur in the rubber with a pair of charged molecules, or ions, called butyl imidazolium and bromide.

但是，研究人员可以通过成对带电分子或离子替换硫磺使这橡胶自行，做丁基咪唑鎓盐和溴化物。

Butyl imidazolium has a positive charge, and it's always accompanied by a negatively charged bromide, just like the ions of sodium and chloride that you find in table salt.

丁基咪唑鎓盐拥有正电荷，总是伴随着一个负电荷溴化物，就像盐粒钠离子和氯离子。