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年來，朝鮮要成為核武大國的決心一再讓世界害怕。本周二該國在這條道路上又邁出了決定性的一步。它進行了第三次地下核試驗，這一次具有相當可觀的爆炸威力。朝鮮聲稱，已成功實現(xiàn)了核武裝置微型化，這是實現(xiàn)彈道導彈攜帶核彈頭的關鍵一步。作為21世紀唯一進行核試驗的國家，朝鮮再一次叫板世界。
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