绿色营销似乎是最近才出现的，但广告专业人士几十年前就对它产生了兴趣。
Green marketing seems recent, but advertising professionals grew interest in it several decades ago.
专业人士这个词就暗示了你是一个专家。
专业人士这个词就暗示了你是一个专家。技术能力是IT业必备部分。
The very word professional implies that you are an expert. Technical competence is essential in IT.
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