Third, there's a lipid called an ionizable lipid.

第三，有一种叫做可电离。

Here, " ionizable" means that when these particles are in the bloodstream, they're neutrally charged, which helps with their safety.

在这里，“可电离”意味着当这些粒子在血液时，它们是性，这有助于它们安全。

And even then, their ionizable lipids aren't even that different, which is reassuring, because when independent groups of scientists converge on similar solutions, it's easier to trust the result.

即，他们可电离甚至没有那么不同，这令人安心，因为当独立科学家小组聚集在类似解决方案上时，结果更容易相信。

So, for example, Moderna and BioNTech, the company that partnered with Pfizer, they discovered different ionizable lipids, and that is the only important ingredient in their COVID-19 vaccines that differ.

因，例，Moderna 和与辉瑞合作公司 BioNTech，他们发现了不同可电离，这是他们 COVID-19 疫苗唯一不同重要成分。