That nuclear fusion is a source of energy has been known since the invention of the hydrogen bomb. But its control is still a fundamental challenge for research institutes, not some minor technical difficulty that can be easily overcome.
不幸的是，政治领导人对于这里所涉及的科学问题知之甚少。核聚变作为一种能源的来源早在发明氢弹的时候就为大家所知了。但是对它的控制对于研究机构依然还是一个根本性的挑战，这绝不是一个可以被轻易克服的细小的技术难题。