Despite the headline, this isn't really a story about superconductivity—at least not the superconductivity that people care about, the stuff that doesn't require exotic refrigeration to work. Instead, it's a story about how superconductivity can be used as a test of some of the weirder consequences of quantum mechanics, one that involves non-existent particles of light that still act as if they exist.
在欧洲，17世纪贵族私人游艇已成风尚。美国游艇产业在19世纪中后期已逐步兴起，二战后进入高速成长期，形成集制造、销售、维修、服务于一体的完整工业体系。
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Working a four-day week has now been common across the Netherlands for a number of years, with even the largest companies getting on board.
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在 2000 年代初期伴我前往巴黎——這本字典在我那個小行李箱中佔據了一半的空間，是不可妥協的必備品。