"dust mask"的定义和意义

What is a "dust mask"?

A dust mask is a protective mask worn over the nose and mouth to filter out dust, dirt, and other small particles from the air. It is commonly used during activities such as cleaning, sanding, or gardening, where dust or debris can be harmful if inhaled. Dust masks help prevent respiratory issues by trapping these particles before they are breathed in. They are typically made from lightweight materials, such as cotton or synthetic fibers, and are designed to be comfortable and easy to wear for long periods. Dust masks are usually disposable but can sometimes be reused depending on the material.