以下是proficiency与proficient的用法辨析，采用对比结构呈现：
1. 词性差异
- proficiency（名词）：指"熟练程度/水平"
例：Her English proficiency amazed the interviewers.
- proficient（形容词）：表示"熟练的/精通的"
例：She is proficient in three programming languages.
2. 典型搭配
名词用法：
? language proficiency test（语言水平测试）
? reach/achieve proficiency（达到熟练程 ...(以上内容有节略,please sign in for more)
One who has made considerable advances in any business, art, science, or branch of learning; an expert; an adept; as, proficient in a trade; a proficient in mathematics, music, etc.
Well advanced in any branch of knowledge or skill; possessed of considerable acquirements; well-skilled; versed; adept,
One who has made considerable advances in any business, art, science, or branch of learning; an expert; an adept; as, proficient in a trade; a proficient in mathematics, music, etc.
Well advanced in any branch of knowledge or skill; possessed of considerable acquirements; well-skilled; versed; adept,
