Unusual 'ice pancakes' normally only found in the Arctic and Antarctic have been spotted in Britain, as temperatures plunged to -11C with almost the whole country in the grip of icy weather. 

英国大部分地区遭遇极寒天气，最低气温降至零下11度，出现了只在北极和南极才有的“冰雪薄饼”。

The ice had frozen in a flat, round shape, around the size of a dinner plate, with the unusual patterns often caused by swirling foam floating on a river starting to freeze, usually overnight. 

冰块被冻成了平底的、圆形的形状，尺寸跟餐盘一般大。这种特殊的形状是由漂浮在河流上的旋转泡沫冻结而成的，通常在一夜间就出现了。