This flashcard introduces the word "proficiency," a noun that means mastery or skill.
这张卡片介绍了单词“proficiency”，这是一个名词，意思是精通或熟练。
| 单词 | proficiency |
|---|---|
| 发音 | [prə'fɪʃ(ə)nsɪ] |
| 释义 | n. 精通，熟练 |
| 词序 | 10455 |
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