Lots of people skate on the river when it freezes every winter. 这条河每年冬季结冰时许多人在上面滑冰。
Flash forward to the winter freeze, when the frigid temperature has turned the mud and sticks into a secure shelter for the beavers. 冬季结冰时间飞逝而来,寒冷的天气已经将泥巴和木棍变成海狸的安全庇护所。