facepiece

例句：

1. 1. The actor wore a facepiece during the filming.
   演员在拍摄期间戴了面具。
2. 2. The firefighters used facepieces to protect their faces from the smoke.
   消防员们使用面罩来保护他们的面部免受烟雾侵害。
3. 3.The scientist had to wear a facepiece while working in the laboratory.
   科学家在实验室工作时必须戴上面罩。