espirator或者mask
mask比较好(它有口罩的意思也有面具的意思),词典中对于口罩的解释是:pad of sterile material worn over the mouth and nose,eg by doctors and nurses during a surgical operation,to protect against infection.注意到说的是医生护士带的用于防感染的
respirator是人工呼吸器/防毒面具,词典中解释:device worn over the nose and mouth to warm,filter or purify air before it is breathed注意到说的是过滤空气
护士们戴着口罩和紧紧扣住头发的白帽子.
The nurses wore masks and close-fitting white caps. 再答： 望采纳
