When someone infected with M. pneumoniae coughs or sneezes, they create small respiratory droplets that contain the bacteria.

当某人感染了肺炎支原体咳嗽或打喷嚏时，他们会产生含有细菌的小呼吸道飞沫。

Most people who spend a short amount of time with someone who is sick with M. pneumoniae do not get infected.

大多数与患有肺炎支原体病的人有短暂接触的人不会被感染。

People of all ages can get M. pneumoniae, but it usually affects people aged younger than 40, most often those aged 5 to 20 years old.

所有年龄段的人都可能感染肺炎支原体，但它通常影响的是 40 岁以下的人，最常见的是 5 至 20 岁的人。