unprofessional people

基本解释

For most of us, the immediate response would be to simply leave the current site in favor of another one because both people and search engines consider broken links as unprofessional.
絕大多數人最直接的反應就是離開，去另外一個站點，因爲無論用戶還是搜索引擎都會把失傚鏈接看作一種不專業的表現。
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In addition, avoid becoming a fan of potentially people or products, or taking online quizzes (for which there are no privacy controls) that could be deemed unprofessional.
另外，不要成爲一個有爭議的人的粉絲，或狂追某個産品，或蓡加在線測試，這些都會讓別人覺得你不專業。

Some people and even organizations believe that smiley faces, winks and other symbols of digital emotion are unprofessional, undignified, and have no place outside of a high school hallway.
FORBES: Emotionally Intelligent Emailing