Face masks are one tool utilized for preventing the spread of disease. They may also be called dental, isolation, laser, medical, procedure, or surgical masks. Face masks are loose-fitting masks that cover the nose and mouth, and have ear loops or ties or bands at the back of the head.
面罩是用于防止疾病传播的一种工具。 它们也可称为牙科，隔离，激光，医疗，手术或外科口罩。 面罩是宽松的面罩，覆盖鼻子和嘴巴，头部后面有耳环或系带或带子。
What is a face mask used for :