proficientKK [prɑˈfɪʃənt] ｜ /prɑˈfɪʃənt/
GEPT 中高級
C2adjective
having or showing skill, knowledge, and aptitude
As a software developer, John is proficient in a variety of programming languages.
精通的；熟練的
C2adjective
of or relating to proficiency in a practical skill or technique
The new hire proved to be very proficient in using Adobe Photoshop for designing marketing materials.
嫻熟的；有技能的