但这存在缺点，只有在理解其涉及的风险后才应该算是全面考虑了此方法。
There are downsides, and only once the risks involved are understood should this approach even be considered.
某些开发人员还采取了第三种方法，这主要是因为工具都或多或少地存在一些缺点或不足，并且开发人员也缺乏对Web服务工具和技术的全面了解。
Some developers have also used a third method, primarily because of shortcomings or defects in tools, and a lack of thorough understanding of Web services tools and technologies.
方法：全面地研究美国的药品专利连接制度，并剖析其产生的积极作用及存在的不足。
METHODS: Comprehensive analysis was made on drug patent linkage system in the USA, including its positive impacts and limitations.
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