working mask

例句：

1. 1. He put on his work mask and went to the construction site.
   他戴上工作面具，去了工地。
2. 2.The workers wore protective gear while working in the hazardous environment.
   工人们在危险环境中工作时穿着防护装备。
3. 3. The doctor advised him to wear a working mask when he was exposed to the virus.
   医生建议他在暴露于病毒时戴上工作面具。