The US has stepped up its efforts to find a way out of the diplomatic impasse over North Korea, with President Barack Obama speaking to President Hu Jintao of China and Hillary Clinton, US secretary of state, hosting her opposite numbers from South Korea and Japan.
美國已加大解決北韓問題上外交僵局的努力。美國總統巴拉克•歐巴馬(Barack Obama)打電話給中國國家主席胡錦濤，而美國國務卿希拉蕊•柯林頓(Hillary Clinton)則會晤了到訪的南韓和日本外長。
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