Maggie Mahoney, a lawyer with the tobacco Control legal Consortium, a national network of legal centres involved in anti-tobacco litigation, praised the persistence of the Williams family.

玛姬·马霍尼，烟草控制法律协会——一个参与反烟草诉讼的全国性网络法律中心的律师，称赞坚持不懈的威廉姆斯家族。

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The stubborn persistence of anti-vaxxers shows how difficult it is to dispel misinformation once that information is out there, even after dozens of new studies and millions of dollars in research that demonstrate that vaccines are safe.

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Mr Silvani has mounted an anti-evasion campaign based in part on stubborn persistence, in part on publicity.

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Is this any way for a writer as good as Jacobson is to tackle such important issues as the tensions between the religious and the secular and the persistence of and sting of anti-Semitism?

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