Professor Bushberg says removing the topsoil might make the land safe for use. But it depends on the depth of the radioactive material.

布希柏格教授说，移除表层土壤可以保证土地的使用安全，但这取决于放射性物质渗入的深度。

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Make certain your body is wrapped in safe, natural material for at least a third of the day by purchasing pajamas and bedding made from organic cotton.

保证自身穿着材料安全，超过一天三分之一的睡眠时间内穿着天然材料制成的睡衣，并且使用有机棉制造的床上用品。

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With the promotion of Angel yeast, the yeast extract has been in short supply in the industry as a safe food raw material.

随着安琪酵母公司的大力推广，酵母抽提物作为一种安全的食品原料已在行业内呈现供不应求的状况。

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Engineers who are developing new materials, materials that can be, if you think about it, there's not very many things that you would want to put in your eye and you'll feel comportable to put in your eye so this is a very safe, a very inert material.

工程师们不断研制新的材料,这些材料应该是,想想吧,能让你们敢于,放到眼睛里的,并令人感到舒适的材料并不多,这应该是一种非常安全非常稳定的材料

耶鲁公开课 - 生物医学工程探索课程节选

While executives can be trusted to face reality and learn from it, even if it means bankruptcy, no such corrective faced the politicians and judges who allowed the bankruptcies of some 35 onetime producers of asbestos on account of preposterous claims of "potential illnesses" from this mostly safe and useful material.

FORBES: Magazine Article

At home, Gonzales acknowledged, he did not put the material into his own safe because he had forgotten the combination, nor does he remember whether he locked his briefcase.

NPR: Report: Ex-AG Gonzales Mishandled Classified Info

Yet the film is beset by incoherence and implausibilities that are perplexing, given the close relationship between the Wachowskis and the director, Mr. McTeigue -- this is not one of those familiar cases, it's safe to say, where the writers lost control of their material when it went into production.

WSJ: 'Vendetta' Is Violent and Vapid