两极地区

• During the quaternary period , spanning the last 2 million years , major glaciations in polar regions affected global sea level , which fell to 120metres below present level , leaving the site of present - day hong kong as much as 130 kilometres from the coast
  长达200万年的第四纪期间，全球海平面受到两极地区几次大冰期的影响，曾下降至现时海平面之下120米，当时的海岸线离开现时本港海岸达130公里。