Whatever product you use should emit only visible light, because ultraviolet light damages the eyes.

不管你用什么产品，都应该只发出可见光，因为紫外线会伤害眼睛。

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Discover how architects, product designers and scientists use similar skills in their work.

了解建筑师、产品设计师和科学家如何在他们的工作中使用相似的技能。

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The top one is the context of the merchant owning the shopping functionality represented by the Purchase Product use case.

上面一个是具有销售功能的商人的语境，它在购买商品用例中表现。

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If you use an alcohol-based product instead of soap and water, make sure it contains at least sixty percent alcohol.

VOA: special.2010.09.29

Should it be customized, or in other words, made specific for the particular audience or can we create something that is an off-the-shelf product that people can use in many different environments?

应该为特定的受众，量身设计教育过程,还是制造,一种现成的产品,以供人们,在多种不同环境中使用？

麻省理工公开课 - 媒体、教育、市场课程节选

"Feedback shows smaller households sometimes can't use the free product before its use-by date, " said Lucy Neville-Rolfe, Tesco executive director.

BBC: Tesco launches Buy One Now, Get One Free... Later

Needless to say, such a combination of an easy-to-use product at no cost was a far easier one to sell.

FORBES: New Relic Up-Ends Tradition

"It's a simple-yet-powerful product that's very easy to use and has one goal: crystal-clear calls, " said Wendy Fortin, ION Product Manager.

ENGADGET: Ion unveils cellphone accessories for home phone replacement, speakerphones