Today, most Indian cities and much of rural India have no air quality monitoring at all.

今天，大多数印度城市和印度大部分农村地区根本没有空气质量监测。

All large and medium-sized Chinese cities will have greater air quality monitoring by 2010, says a government official.

一位政府官员表示，到 2010 年，中国所有大中型城市都将加强空气质量监测。

The government has spent 150 million Yuan on air quality monitoring systems across China since 2000 when officials began paying greater attention to air quality monitoring.

自2000年官员们开始更加关注空气质量监测以来，中国政府已经在全国空气质量监测系统上投入了1.5亿元。

Song Lanhe, chief engineer for urban water quality monitoring at the housing ministry, says only half the water sources in cities are safe to drink.

建设部城市水质监测中心总工程师宋兰合说，城市水资源中仅有一半能供人安全饮用。

There are a number of ways scientists can measure air quality, monitoring stations can keep track of the air in one specific place and detect any changes.

科学家们测量空气质量有很多种方式, 空气监测站能够在一个特定的地方进行追踪, 检测任何变化。

More than 220 cities now have air quality monitoring systems and 42 others will have systems in place by the end of this year.

目前，220 多个城市拥有空气质量监测系统，另外 42 个城市将在今年年底前建成。