Be sure your professional presentation is polished and that you give proper attention to your hair, nails, teeth, and general hygiene.

保证你在职场上的讲话都是经过深思熟虑的，同时花点时间关注自己的外形，比如头发、指甲、牙齿以及个人卫生。

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Computer graphics will give your presentation the professional touch.

计算机绘图将会使你的演示具有专业特色。

《牛津词典》

That presentation was of professional quality.

你的表现很有专业水准。

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It can also allow a business professional to arrive for a presentation carrying only a palm-size computer, which will be able to pull the presentation off the Web.

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They further allege that these agreements are not necessary to produce professional contests, and that the agreements directly reduce competition in the live-game presentation market.

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