Destroying the remaining stocks of variola is seen by some countries as the final chapter in eradicating the disease to prevent the risk of accidental release.

一些国家认为，销毁剩余的天花病毒库存是消除这种疾病以防止意外释放危险的终章。

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U.S. scientists estimate nearly 5 million barrels of oil leaked from the damaged well, making it the largest accidental release of oil into the seas in history.

美国科学家估计将近500万桶石油经受损油井泄漏出来，造成历史上最大的海上漏油事故。

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Any accidental release of fluorine could also be an issue: fluorine is a toxic and corrosive gas and, at high concentrations, can retard plant growth and damage teeth and bones.

氟气的任一次意外泄漏也都可能造成问题。氟气是一种有毒的腐蚀性气体，而且，在高浓度时，能阻碍植物生长并，损伤牙齿和骨骼。

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These policies can help stop the accidental release of confidential material and catch people supplying a company's competitors with key information.

BBC: Net software keeps tabs on staff

This was before an unusual 30 minute shutdown today, apparently over the accidental release of some internal prototypes, and he was thinking longer term.

FORBES: Facebook Exec Talks 2011

Chivas Brothers - which employs 600 workers at the plant and produces the world's second biggest-selling brand, Ballantine's - said it was investigating an accidental release of spirit.

BBC: Chivas Brothers aged Scotch whisky range