Coal is the most important part of energy structure and the natural surroundings in poor dispersion of pollutants in the air are the main reasons for serious pollution in Lanzhou urban.
以煤为主的能源结构和不利于污染物扩散的自然环境是兰州市区大气污染严重的主要原因。
2
The dispersion of such knowledge as is available in markets is seen as a natural outcome of the very informal environments that markets operate under.
这种知识的分散，可在市场上被看作是一个自然的结果，非常非正式的环境下，市场运作下。
3
A unique fiber dispersion method, which enabled uniform distribution of natural fibers, was used in this process.