沙尘暴是一种自然现象，但是受到了人类活动的影响，现在和交通和工业空气污染一样严重。
Dust storms are a natural phenomenon, but are influenced by human activities and are now just as serious as traffic and industrial air pollution.
同许多发展中国家和新兴工业化国家一样，在南非，关于空气污染的立法未能跟上迅速发展的工业的速度。
In South Africa, as in many developing and newly industrialized countries, legislation on air pollution has failed to keep pace with mushrooming industries.
为满足增长的能源工业，大批的发电机、工业烟囱和大型机械涌现，纯净的土地爷将会遭空气污染和水污染。
Land that was untouched could be tainted by air and waterpollution as generators, smokestacks and large vehicles sprout to support thegrowing energy industry.
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