零下

língxià
below zero (esp. temperature)

CEDICT

Entry Composition

1 零 líng
  1. zero
  2. nought
  3. zero sign
  4. fractional
  5. fragmentary
  6. odd (of numbers)
  7. (placed between two numbers to indicate a smaller quantity followed by a larger one)
  8. fraction
  9. (in mathematics) remainder (after division)
  10. extra
  11. to wither and fall
  12. to wither
2 下 xià
  1. down
  2. downwards
  3. below
  4. lower
  5. later
  6. next (week etc)
  7. second (of two parts)
  8. to decline
  9. to go down
  10. to arrive at (a decision, conclusion etc)
  11. measure word to show the frequency of an action