For nearly two decades, North Korea has regularly scared the world with its determination to become a fully fledged nuclear weapons state. On Tuesday it took another decisive step on that road. It conducted its third underground nuclear test, this time with substantial explosive power. It claimed to have successfully miniaturised the device that was used, a key step towards fixing a warhead to a ballistic missile. Once again, North Korea took a bow as the only country in the world that is conducting nuclear tests in the 21st century.
近20年来，朝鲜要成为核武大国的决心一再让世界害怕。本周二该国在这条道路上又迈出了决定性的一步。它进行了第三次地下核试验，这一次具有相当可观的爆炸威力。朝鲜声称，已成功实现了核武装置微型化，这是实现弹道导弹携带核弹头的关键一步。作为21世纪唯一进行核试验的国家，朝鲜再一次叫板世界。
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