Nature has gone into hibernation. frosts have comeNature has gone into hibernation. Frosts have come
America has a very cold winter, a lot of snow and frostAmerica has a very cold winter, a lot of snow and frost
Сильный холод (с температурой воздуха ниже нуля). Холодная погода (с температурой воздуха ниже нуля).