What is the most important safety measure for workers at this plant - ensuring good ventilation, or appropriate footwear?

这家工厂的工人最重要的安全措施是什么——确保良好的通风，还是穿合适的鞋？

That's because the particles that carry the virus get diffused by circulating air, when people are gathered indoors in tight spaces without good ventilation that increases the likelihood of spread.

这是因为携带病毒的颗粒通过空气循环扩散，当人们聚集在室内狭小空间，没有良好的通风条件时，就增加了传播的可能性。