Salt is almost always treated with additives ( magnesium carbonate , magnesium oxide , calcium silicate ) to prevent it from absorbing moisture and ensure that it remains free flowing and granular 盐几乎总与添加剂(碳酸镁、氧化镁、矽酸钙)处理来防止它吸入空气中的湿气和保护它仍然随意的流动和颗粒状。
According to new scientist , steve perry and jonathan codd from the university of bonn said sauropods , which reached 40 metres and weighed 100 tonnes ( 10 times as much as the largest elephants ) sucked in air more efficiently than mammals today 根据新科学家杂志，柏恩大学的史提夫裴利与强纳森考德表示， 40公尺， 100吨(最大型大象的10倍)的龙脚类恐龙，以比今日哺乳类更有效率的方式吸入空气。
Intake port is the important part of engine , the flow characters and the design of intake port of have the vital effects on the performance of engine . the structure of intake port affects the quantity of fresh air in cylinder and the strength of swirl , so affects the degree of combustion 、 components of exhaust and feasible energy of exhaust , and so on 进气系统是发动机的重要组成部分，系统内气流的品质和气道设计是否合理，对发动机性能及工作可靠性等都有很大的影响，发动机进气道的结构直接影响缸内新鲜空气充量的大小和吸入空气涡流的强度和程度，从而直接关系到发动机的燃烧完善度、排气的成分以及废气可用能量等。
Though lifestyle changes and pollution ultimately leave people more vulnerable to the airborne allergens they breathe in , research has shown that the higher carbon dioxide levels and warmer temperatures associated with global warming are also playing a role by prodding plants to bloom earlier and produce more pollen 尽管人们生活方式有所改变，而且污染最终导致人们更易受吸入空气中传播的过敏原的影响，有关研究已显示与全球变暖有关的高二氧化碳含量和更高的气温在促使植物开花期提早以及产生更多花粉方面起了一定的作用。
