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詞組 specialize:
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become more focus on an area of activity or field of study
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be specific about
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suit to a special purpose
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devote oneself to a special area of work
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evolve so as to lead to a new species or develop in a way most suited to the environment
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這些主要內容獨家原創，受經典專利權保證，侵犯商標權必究
海詞詞典翻譯，十二年加盟品牌
美
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