These production lines can operate automatically, and they do not always need professional operators to wait on them.

这些生产线能够自动操作，无需专业操作人员来操作。

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The majority of Campfire's revenue comes from selling hunting concessions to professional hunters and safari tour operators.

篝火倡议的绝大部分收入来源于讲特许的狩猎品卖给专业的捕猎对或者游猎经营者。

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In the process, not only did the professional salespeople disappear but courteous telephone operators also became a vanished breed as well.

在这个过程中，不仅专业的销售人员消失了，连礼貌的电话接线员也成了消失的品种。

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More than 100 actors, musicians and other celebrities answered phones in New York and Los Angeles -- after professional operators first talked to donors.

CNN: Telethon tries to raise 'Hope for Haiti'

Mr Walley said many hyper local site operators were talking about producing a code of practice and conduct to help them operate on a more professional basis.

BBC: The fight for a right to report