密果儿小雨
respirator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
小殊哥哥
respirator或者maskmask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.
