I love reducing wear and friction in these challenging environments.

我喜欢在这些充满挑战的环境中减少磨损和摩擦。

Health experts in the USA believe that wearing a mask could reduce the risk of people spreading the virus and give a little protection to those who have not contracted it.

美国健康专家认为戴口罩可以降低人们传播病毒的风险也给了那些没有感染病毒的人一些保护。