Technologies to generate green electricity follow one of two trajectories. Some get cheaper, such as solar panels, which are small, modular and factory produced. Others, like nuclear plants, tend instead to be plagued with overruns and delays. Nonetheless, the UK’s decision to press ahead with a new nuclear project, Sizewell C, still makes sense.
可再生电力技术的发展大致遵循两种路径：一类如太阳能电池板，体积小、模块化、工厂量产，成本不断下降；另一类则像核电站，常常受到预算超支和工期拖延困扰。尽管如此，英国决定推进新的核电项目Sizewell C，依然是合理的。
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