The very word professional implies that you are an expert. Technical competence is essential in IT.
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。
Some professional and technical aspects of the word, sometimes up to dozens of letters, only the knowledge of experts in the industry.
有些专业技术方面的单词，有时长达几十个字母，只有本行业的专家们认识。
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