airborne contaminant

• 空气污染物

airborne contaminant的用法和样例：

例句

1. If a respirator does not seal tightly to the face, airborne hazards can penetrate or enter underneath the facepiece seal and into the breathing zone.
   如果呼吸器不能紧密地与使用者的面部密合，空气污染物就会从面部密封部位穿透，进入呼吸道。