microcleanliness

例句：

1. 1. The microcleanliness of the air in this room is very good.
   这个房间的空气非常干净。
2. 2. The researchers found that the microcleanliness of the water played a crucial role in the experiment.
   研究人员发现，水中的微观清洁度在实验中起到了关键作用。
3. 3. The microcleanliness of the surface was so high that it could not be cleaned by any ordinary cleaning agent.
   表面非常干净，任何普通的清洁剂都无法清洁。