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，员可以通过成对的带电分子或离子替换其中的硫磺使这橡胶自行修复，叫做丁基盐和溴化物。

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.

丁基盐拥有正电荷，总是伴随着一个负电荷的溴化物，就像盐粒中的钠离子和氯离子。