Young boys are rolling(滚) a snowball in a park after a heavy snowfall in southern England. But sometimes, they can swim in winter!
In England, they may have four seasons in one day. In the morning the weather is warm just like in spring. An hour later black clouds come and then it rains hard. The weather gets a little cold. In the late afternoon, the sky is sunny, the sun begins to shine, and it is summer at this time of a day.
In England, people can also have summer in winter, or have winter in summer. And in summer, sometimes they should take warm clothes like sweaters. So in England, don't laugh at a man or a woman with a raincoat on a sunny morning!