当温度降至临界温度以下，某些金属会突然失去电阻，出现超导现象，这就是相变的一个例子。
The emergence of superconductivity in certain metals when cooled below a critical temperature is an example of a phase transition.
普通超导现象的出现就是奇异的。
1959年，就在物理学家解释了超导现象两年之后，其中一些物理学家提出在超高温，超高压的中子星内存在相似的成对现象。
In 1959, just 2 years after physicists worked out that explanation for superconductivity, some of them proposed that similar pairing may happen inside incredibly hot, hugely pressurized neutron stars.
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