英语语法分析

They should then be able to refer you to the appropriate type of practitioner, whether it be your GP, dentist, or optician.

然后他们应当能够介绍你去见合适科别的执业医生，不管是你的全科医师、牙医还是配镜师。

《柯林斯英汉双解大词典》

At Columbia, he was trained as a nurse practitioner.

在哥伦比亚，他被训练成一名执业护士。

In fact, they are prescribed and they're given at a certain level, a dosage that is understood by a practitioner who's been trained.

实际上，这类补药属于处方药，须由经过训练的职业医师规定剂量。