1·Another method of communication could be through the use of incredibly powerful pulsed lasers, such as those now being developed for nuclear fusion reactors.
另一种通讯方法可能是使用诸如现在为核聚变反应堆开发的那些非常强大的脉冲激光器。
2·Technological progress will be essential but, barring a breakthrough in nuclear fusion, it will not set us on a path to an energy system purged of fossil fuels.
技术进步将必不可少，但除非在核聚变技术上获得突破，否则我们无法借此建立一个没有化石燃料的能源体系。
3·Future observations will determine whether this is a planet or a brown dwarf, a gaseous body not big enough to begin the nuclear fusion process that makes stars shine.
进一步观测将会确定这是否是一颗行星，还是一颗褐矮星，即一个不够大，无法开始核聚变反应来发出光芒的气体星体。
4·But accelerators could potentially produce nuclear fusion, which fuses atomic nuclei together.
而加速器可能产生核聚变，将原子核融合在一起。
5·These are formed when the nuclear fusion reactions at the centre of a star can no longer support its structure.
行星状星云是当一个恒星的中心核聚变反应不再能支持其结构时而形成的。