proficient
英 [prə'fɪʃ(ə)nt]
美[prə'fɪʃnt]
	    - adj. 熟练的,精通的
 - n. 精通;专家,能手
 
英英释意
- 1. having or showing knowledge and skill and aptitude;
 - "adept in handicrafts"
 - "an adept juggler"
 - "an expert job"
 - "a good mechanic"
 - "a practiced marksman"
 - "a proficient engineer"
 - "a lesser-known but no less skillful composer"
 - "the effect was achieved by skillful retouching"