亚洲精品1234,久久久久亚洲国产,最新久久免费视频,我要看一级黄,久久久性色精品国产免费观看,中文字幕久久一区二区三区,久草中文网

Ice in various shapes and sizes is seen at the Yuqiao Reservoir, Tianjin, North China, January 14, 2009. The water of Yuqiao Reservoir is frozen due to temperature drops and the ice swells because of the negative thermal expansion effect. [Xinhua]