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- R6 Explosive with or without contact with air. 与空气或未与空气接触发生爆炸；
- Liquid fuels also burn only when the surface of the liquid is in contact with air. 液体燃料也只有当液体表面与空气接触时才会燃烧。
- This food will deteriorate rapidly on contact with air. 这种食物一接触到空气即迅速变坏。
- Being pyrophoric, most leaks will immediately ignite on contact with air. 由于可以自燃，大多数泄露一接触到空气立刻就会点燃。
- The reverse side of the mirror should be in continuous contact with air without needing ventilation. 反射镜的背面应经常与空气接触但无需通风。
- Wherever the beam makes contact with air, the air molecules interact in a way that isolates the original audible sound. 无论在哪里，这个柱能使得跟空气交流，互相作用空气分子用一种方法来隔绝原来能听到的声音。
- Magnesium metal quickly reacts exothermically upon contact with air or water and should be handled with care. 镁容易与空气或水产生放热反应,应妥善保存。在处理镁金属时应戴上防护眼镜。
- This high rate of turnover ensures that the concentrate does not come in contact with air until dispensing. 这种高周转率保证了集中精力并不在与空气接触，直到配药。
- Toxicity: The major hazards of silane stem from its ability to spontaneously ignite on contact with air and its toxicological properties. 毒性：硅烷的主要危险来自它接触空气可以自发燃烧的能力和它的毒物学的性质。
- Common sense tells us that most fuels can burn only when they come into contact with air. 常识告诉我们，大多数燃料只有接触空气时才能燃烧。
- WITH GLOSS OF MCTAL IN PLACES SOLID, IN CONTACT WITH MOISTURES WATER, ALKALIS OR ACIDS, MAY EVOLVE HYDROGEN WHICH MAY FROM EXPLOSIVE MISTURES WITH AIR. 具有金属光泽的块状固体,遇潮、水、酸、碱时,放出氢气形成与空气混合的易爆性气体。
- Meanwhile, it is able to form a protective layer to cover fruit, meat and seafood, warding off direct contact with air, hence, prolongs reserve period. 还可用来覆盖水果、肉、禽类和水产品作为保护层，与空气不直接接触，延长贮藏时间。
- When not in use, gently rub the surface with cotton or tissue to remove dirt and moisture.Placed in sealed bags or boxes to avoid contact with air. 不用时可用棉布或面纸轻拭表面，清除水份和污垢，将它置放于密封的袋子或盒子中，避免与空气接触。
- The room is equipped with air conditioning. 这个房间装有空调设备。
- That poor madam has lost all contact with reality. 那位可怜的夫人脱离了现实生活。
- He equipped his car with air conditioning. 他给他的汽车装了空调。
- Have the children been in contact with disease? 孩子们同这种疾病有过接触吗？
- Air traffic controllers were in radio contact with the aircraft. 空中交通调度员通过无线电和飞机保持联络。
- The lake sits beneath 400 meters of ice and trickles out at the glacier's end, painting an orange stain across the ice as its iron-rich waters rust upon contact with air. 该湖泊位于冰面以下400米处，从冰川的末端流出，其富铁的水质遇到空气后生锈，流经冰面时染上一片橘红色的痕迹。
- I came in contact with her by telephone. 我和她通过电话联络。
