One of the survey's indicators was the implementation of voluntary, unpaid blood donation, which remains a mainstay of WHO recommendations to ensure a safe and sufficient blood supply.

调查的指标之一是实行自愿无偿献血，它继续是世卫组织建议的支柱，以确保安全和充足的血液供应。

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The percentage of blood donations from voluntary unpaid donors has been increasing over the last decade and 73 of the world's countries now collect over 90% of their blood supply from such donors.

过去十年中自愿无偿献血者的献血百分比一直在增加，世界73个国家目前血液供应90%以上来自这类献血者。

youdao

Then, from the Angle of behavior economics, this thesis analyzes that managers may not have enough motivation to supply voluntary information, and voluntary disclosure appears to be dissimilated.

然后，本文从行为经济学的角度，论述了自愿披露行为会出现动因不足及异化。

youdao

On Tuesday morning, I joined General Services Administration Administrator Martha Johnson in Chicago, Illinois, at the first-ever GreenGov Supply Chain Summit to announce a voluntary collaboration between the Federal Government and vendors and suppliers to create a greener and more efficient supply chain.

WHITEHOUSE: Greening the Supply Chain

The Food and Drug Administration will publish new voluntary guidelines to protect the nation's food supply against intentional contamination by terrorists.

CNN: graphic

"Our responsibility is to work with those private providers, to work with the voluntary organisations, to work with schools to try and increase the supply, " he told 5 live.

BBC: Adult plays with a toddler