Potential stimulants of airway hyperreactivity may include allergens, exercise, cold weather, viral infections, medicines, or mechanical airway stimulation.
引起气道高反应性的潜在因素包括变应原，锻炼，冷空气，病毒感染，某些药物，或气道的机械刺激。
Therefore, if the long time does not wear, or wear after the amount of exercise, it will lead to the mechanical table does not go.
所以如果长时间不佩戴，或者佩戴后运动量不足，也会导致机械表不走。
It marks their first exercise in complex watchmaking that are to be followed by a series of new concepts in mechanical timekeeping and display.
这标志着他们的第一运动在复杂制表工艺是应遵循的一系列的机械计时和显示的新概念。
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