Technical troops specializing in mapping, meteorology, water supply and avia-tion have provided such services as geographic survey, weather forecast, water source exploration, aerial sowing and artificial pre-cipitation in the western region.是什么意思_Technical troops specializing in mapping, meteorology, water supply and avia-tion have provided such services as geographic survey, weather forecast, water source exploration, aerial sowing and artificial pre-cipitation in the western region.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句