World leaders started arriving in Washington yesterday for a showpiece summit at which Barack Obama will tackle the terrorist threat with a deal to secure all nuclear materials during the next four years.
世界各國領導人昨日開始抵達華盛頓參加令人矚目的核安全峯會。巴拉克•歐巴馬(Barack Obama)在會上將尋求達成一項協議,在今後四年期間保障所有核材料的安全,以對付恐怖主義威脅。
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