Now, He2, stable or not?

现在He2，稳定吗？

麻省理工公开课 - 固态化学导论课程节选

Or vaccines that could be transported more easily— the hepatitis vaccine that we get is not stable unless it's refrigerated.

或者令疫苗更易于运输,现在的肝炎疫苗一定要冷藏,否则它就不稳定

耶鲁公开课 - 生物医学工程探索课程节选

The question now is, is H2 stable or will it not form?

现在的问题是，H2稳定吗，它到底会不会形成？

麻省理工公开课 - 固态化学导论课程节选

The other is that some places where the disease occurs the governments are not stable, or there might be civil unrest or civil wars and that makes it very difficult to orchestrate giving vaccines when there's other things happening in the country that are of more immediate concern.

另一个原因是,一些疾病发生地区,当地的政局不那么稳定,或者有动乱和内战,当在一个国家内发生许多,突发应急事件的时候,疫苗的分派发放会变得非常困难

耶鲁公开课 - 生物医学工程探索课程节选