A flying doctor service operates in remote regions.

在偏远地区有飞行医生服务。

He used to feel sick a lot. Now, he is used to the lifestyle of a flying doctor.

他过去感到非常不舒服。现在，他习惯了飞行医生的生活方式。

They also say persons with heart or lung problems should seek advice from their doctor before flying.

他们还认为有心脏病或者肺病的人在起飞前要询问医生的建议。