微场景单词卡
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海外留学
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雅思IELTS
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基础补漏 CEFR A1-B1
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A1
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back ·adverb
back ·adverb
Phonetics: /bæk/ Level: A1
b
back ·adverb (RETURNING)
Definition: where someone or something was before Level: A1
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