卫生学者

例句：

1. 1. He is a well-known sanitarian in his field.
   他在其领域是一位知名的卫生学专家。
2. 2. The health professional advised the patient to take more exercise.
   这位健康专业人士建议病人多运动。
3. 3. Sanitation experts are often called upon to provide guidance on public health issues.
   卫生专家经常被召来就公共卫生问题提供指导。