{"groundTruth": ["炉火纯青"], "candidates": [["克敌制胜", "拿手好戏", "大气磅礴", "炉火纯青", "举重若轻", "无师自通", "一往情深"]], "content": "飞利浦SPA4320音箱所采用的功放芯为UTC2030，这种芯片为音响发烧友所熟知。当年飞利浦也推出过pintopin的芯片，对电路的掌握和把控可谓#idiom#。另外，还有三颗集成放大芯片电路同样经过了严谨而细致的设计。", "realCount": 1}