translation.en: So I really think that in the, say, 20 years it's going to take us to get fusion and make fusion a reality, this could be the source of energy that provides carbon-free electricity.
translation.zh: 所以，我真的觉得， 我们会用20年的时间 来使聚变成一个现实， 这可以成为一个种能源 提供无碳电力。