极其寒冷的
extremely and unpleasantly cold
  I remember it was a bitterly cold December night.
 We played throughout winter in bitterly cold weather.
 It was a long and bitterly cold winter.
 You'll need your coat and scarf because it's bitterly cold outside.
 A bitterly cold northerly wind swept over the east of the country.
 See also: bitterly (COLD)