但我关心的是为什么她对艾伦材料的重占必须被视为是剽窃，而非赫格曼和她的辩护者所称的只是现在通行的做法。
What concerns me are the reasons why her re-appropriation of Airen’s material must be considered plagiarism and not, as Hegemann and her defenders argue, simply an accepted practice of the times.
世卫组织编制和更新了一系列基于证据的资源材料，涉及注射安全、废弃物管理、卫生保健工作者保护和感染控制等方面的最佳做法。
WHO develops and updates a series of evidence-based resource materials on best practices for injection safety, waste management, health care worker protection and infection control.
但是，一些缺乏这种监督，使用的材料和做法未经任何质量和安全控制的国家也在开展异种移植。
However, xenotransplantation is also carried out in countries that lack such oversight and where materials and procedures used have not undergone any quality and safety controls.
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