They are naturally resistant to most antibiotics and can even survive an alcoholic hand gel.

这种细菌天生地对多种抗生素免疫，甚至含有酒精的洗手液也不能完全的杀死它们。

They were given fluorescent hand gel so scientists could see which surfaces were touched most often, and smoke was pumped to track how ventilation affects the spread of the virus.

他们还会得到涂抹在手部的荧光凝胶，这样科学家们就能观察出哪些地方被触摸的最多，然后注入烟雾来观察通风对病毒的传播有什么影响。