The air in this mill stings the eyes. 这加工厂里的空气会刺激眼睛。 This thin cotton mask is no protection against poisonous fumes. 这薄棉花口罩,哪能保护你免于吸入毒气? We should stop contaminating the air. 实在不该污染空气。 It's stuffy in here. It's heavy in here. 这儿闷得很。这里的气氛很凝重。 The fresh air feels marvelous. 清新的空气,使人心旷神怡。