proficiency

[prəu'fiʃənsi]

释义

n.精通，熟练
The state or quality of being proficient; competence.

例句
Leonard：Oh, great. Well, the key to acquiring proficiency in any task is repetition.(The Big Bang Theory)
莱纳德：哦，太好了，想精通一门技术要诀就在于重复再重复。（生活大爆炸）