dust guard cover

例句：

1. 1.The car was covered in a thick layer of dust when it arrived.
   汽车到达时，上面覆盖着厚厚的一层尘土。
2. 2.The workers used a dust guard cover to protect their eyes from the fumes.
   工人们使用一个防尘罩来保护他们的眼着免受烟雾的影响。
3. 3. The construction site had been sealed off with a dust guard cover to prevent dust from spreading.
   施工现场被密封起来，以防止灰尘扩散。