results = extractor.extract_relations(
全磁悬浮技术通过电磁力让叶轮在血液中悬浮无接触旋转，彻底消除了机械摩擦带来的血液破坏。
，详情可参考体育直播
│ field2: Option (1B) │，更多细节参见体育直播
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Windows Server 2008