So call on the "doctor" inside your mind, and keep happy and well!

所以，在你头脑中呼唤“医生”，保持快乐和健康！

youdao

Doctor Liu is on call at all times.

不论什么时候刘医生随叫随到。

《新英汉大辞典》

If the firms engineers succeed in doing so, the result will be like an electronic nurse that can keep an eye on someone and know when to call the doctor.

如果这些企业的工程师们能研制成功，那么将有可能出现一位密切关注病人的电子护士，并且它还知道何时该通知医生。

youdao

The maximum working-hours directive, for instance, will leave governments free to decide whether they define an on-call junior doctor as working or not.

ECONOMIST: European Union