translation.en: But if you wanted to know what the perfect energy source is, the perfect energy source is one that doesn't take up much space, has a virtually inexhaustible supply, is safe, doesn't put any carbon into the atmosphere, doesn't leave any long-lived radioactive waste: it's fusion.
translation.zh: 但如果你想知道最完美的能源来源是什么的话， 让我来告诉你，最完美的能源来源 不需要占据这么大的空间， 拥有几乎无穷无尽的供给， 使用安全，不会向大气中投放任何碳物质， 并且不会残留任何长期的辐射废物。 这就是核聚变。