词汇作为语言的基本单位，被许多语言学家和语言教育工作者认为是语言教育的中心；
Vocabulary, as the basic unit of a language, is considered by many linguists and language educationists the center of language education;
词汇作为语言的基本单位，被许多语言学家和语言教育工作者认为是语言教育的中心；
Vocabulary, as the basic unit of a language, is considered by many linguists and language educationists the center of language education;
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