The two-week UN climate change conferences held in a different city each year have a habit of being overshadowed by troubles elsewhere, from Afghan wars to EU financial crises.
从阿富汗战争到欧盟(EU)财政危机，每年在不同城市举行、每次为期两周的联合国气候变化会议总是因为其他地方的问题蒙上阴影。
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