aboooot Posted May 18, 2008 at 01:31 PM Report Share Posted May 18, 2008 at 01:31 PM Dear friends, does 2年一遇的降雨不外排 in this sentence 国家体育场22ha用地范围内的雨水由6座总容积12000m3的水池完成收集，使2年一遇的降雨不外排，是目前国内外最大型的雨水收集设施 mean that the 6 tanks can contain the rain that falls every two yers? Or does it mean that the 6 tanks can contain the rain that can fall in two years? Or neither of the two? Quote Link to comment Share on other sites More sharing options...
skylee Posted May 18, 2008 at 01:38 PM Report Share Posted May 18, 2008 at 01:38 PM It means that the 6 tanks can collect the rainfall of the heaviest rain that is likely to happen in a 2-year span without resorting to draining. I've heard that in HK the landslide emergency measures have to cater for 五十年一遇的大雨, the heaviest rainfall that is likely to happen in a 50-year span. Quote Link to comment Share on other sites More sharing options...
aboooot Posted May 18, 2008 at 03:18 PM Author Report Share Posted May 18, 2008 at 03:18 PM Thank you! I was really not sure! Quote Link to comment Share on other sites More sharing options...
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