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N-VAR
（某人所掌握的）詞匯,詞匯量
Your vocabulary is the total number of words you know in a particular language.
例句
His speech is immature, his vocabulary limited...
他說話很幼稚，使用的詞匯有限。
We read to improve our vocabularies.
我們閱讀以便擴(kuò)大詞匯量。
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N-SING
(某一語言的）詞匯，詞匯量
The vocabulary of a language is all the words in it.
例句
...a new word in the German vocabulary.
德語詞匯中的一個新詞
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N-VAR
專業(yè)詞匯
The vocabulary of a subject is the group of words that are typically used when discussing it.
例句
...the vocabulary of natural science.
自然科學(xué)詞匯