diffusiontrachea

例句：

1. 1.The diffusion of information is a crucial factor in the spread of ideas.
   信息的传播是思想传播的关键因素。
2. 2. The diffusion of the disease was slow due to the lack of effective treatments.
   由于缺乏有效的治疗手段，疾病的传播速度缓慢。
3. 3.The diffusion of the virus through the air is a concern for public health officials.
   病毒通过空气传播给公共卫生官员带来了担忧。