在五年多前，理论上已经被证实可行，但这才是它的首次实践运用。
It has been held out for more than 5 years as a promising technique in theory, but this is the first time it has been put into practice.
集中式太阳能发电是一种已被证实可行的技术，它将能为整个欧洲提供足够的电力。
Concentrating solar power is a proven technology that could supply enough electricity to power the whole of Europe.
这至少应当在当地风俗与传统许可的情况下来完成，对于证实可行的登山方式应当准确报告。
It should be completed in a manner at least as good as the style and traditions of the region. The way the climb was achieved should be reported exactly.
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