Those who stay on for an additional two years can earn a master's degree that qualifies them as nurse practitioners (执业护士) or clinical nurse specialists.
出自-2013年12月阅读原文
柯林斯高阶英汉双解学习词典释义
N-COUNT
专家
A specialist is a person who has a particular skill or knows a lot about a particular subject.
例句
If you are housebound, you can arrange for a home visit from a specialist adviser...如果你出不了门,可以预约专家顾问上门就诊。Peckham, himself a cancer specialist, is well aware of the wide variations in medical practice.佩卡姆本人是一名癌症专家,他非常了解不同治疗方法之间的巨大差异。