【直播：极寒天气下的尼亚加拉大瀑布】Extreme cold weather in southern Canada has frozen the edge of the iconic Niagara Falls. But what has led to this record cold snap and made Canada colder than the Arctic Circle? http://t.cn/RH3z1M2 . _新浪新闻

CGTN 18-01-05 22:12

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【直播：极寒天气下的尼亚加拉大瀑布】Extreme cold weather in southern Canada has frozen the edge of the iconic Niagara Falls. But what has led to this record cold snap and made Canada colder than the Arctic Circle? http://t.cn/RH3z1M2 .