1. The services include landscape design and planting, plant production, horticultural research, tree maintenance and conservation. 
   服务范围包括园景设计和种植、植物培植、园艺研究，以至树木的料理和保护。
2. On the upper reaches of the Yangtze River, efforts will be made to prohibit hunting and grazing and plant trees on mountains, return the grain plots to forestry, and carry out water and soil conservation.  
   在上游地区封山育林，退耕还林，保持水土；
3. Conservation Environment of Collection 
   藏品保存环境
4. conservation law of energy 
   能量守恒定律
5. conservation of historic building 
   城市历史建筑保护

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