특정 분야나 활동에서의 높은 수준의 실력, 숙련도 또는 전문성.
A high degree of skill, competence, or expertise in a particular field or activity.
예문:
"The job requires a high level of proficiency in data analysis and software programming."
"Students must pass a language proficiency test before they can enroll in the advanced literature course."
"Her proficiency with the violin earned her a seat in the national orchestra."