Cold northern winter, the average temperature of January fluctuated plain zero. And the Alps the temperature can drop to minus 20 degrees, and even some mountain snow fields.

• 北方地区冬季寒冷,一月份波河平原的平均气温为零度,而阿尔卑斯山区气温可降到零下20度,有些山峰甚至终年积雪。