介绍兰州家乡关于天气的英语作文、重点看清楚是英语、急求、不少于200个单词、棒棒忙、是英语的

Question

介绍兰州家乡关于天气的英语作文、重点看清楚是英语、急求、不少于200个单词、棒棒忙、是英语的

Answer 1

Lanzhou is situated in the temperate zone and enjoys a semi-arid climate (Köppen BSk) with hot summers and very cold and dry winters. Mean annual rainfall is 315 millimetres (12.4 in), almost all of which falls from May to October. The winters are so dry that snow is extremely rare.
In regard to air pollution Lanzhou has some of the worst air quality of all cities in China. According to the Blacksmith Institute, Lanzhou is one of the 30 most polluted cities in the world, with its TSP (total suspended particle) rating 247% above that of the Gansu State recommendation. The air quality is so poor that at times one can not see Lanshan, the mountain rising straight up along the south side of the city. At one point, a controversial suggestion was put forward to bulldoze a mountain adjacent to the city, in order to let fresh air in to the bowl where Lanzhou is situated. It was suggested on the premise that the surrounding mountains block a free flow of air in the city. The city is located in a narrow river valley with an unfortunate curve causing it to be hemmed in with no free air flow. Lanzhou is also the home of many factories, including some involved in petroleum processing, and suffers from large dust storms kicked up from the Gobi Desert, especially in the winter and spring.
The reach of the Yellow River at Lanzhou carries a high load of silt, giving the river its characteristic muddy appearance; however water quality in this reach is better than the "fetid outflow that barely passes for water two hours downstream"
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