Meteorologists use satellites, land observatories and historical data to provide information about the weather.
气象学家使用卫星 、 上天文台和历史资料来提供有关天气的信息.
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Since they were excellent astronomers, some think that they also used their pyramid structures as observatories.
由于玛雅人是出色的天文学家, 有人认为他们还将这些金字塔建筑用作天文观象台.
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There were 256 meteorological observatories with radar installations and 356 satellite cloud map receiving stations.
全国共有气象雷达观测站点256个,卫星云图接收站点356个.
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