经过7年干旱的蹂躏和有毒沙尘暴的窒息后,为了2008年奥运会,中国将使用火箭和化学弹对隐约浮现在其城市上空的云层进行催雨,清洗其受污染的天空。在利用云层进行降雨方面中国处于世界领先地位。为使雨水驱除污染、清除灰尘和确保清澈的天空,北京在重大公共节日前进行人工降雨已 After seven years of drought-plagued and poisonous dust storms, for the 2008 Olympics, China will use rockets and chemical bombs to rain clouds on clouds that have loomed over its cities to clean its contaminated sky. China is a world leader in the use of clouds for rainfall. To allow rain to remove pollution, remove dust, and ensure clear skies, Beijing has carried out artificial rainfall before major public holidays.