操作系统一旦拥有最多的和最易感染的用户，这样的环境同样为病毒提供了繁殖的肥沃土壤。
The same ecosystem that provides the biggest, most susceptible audience also provides the most fertile breeding ground for the nasty executables.
个体的堆肥制造机相对而言比较便宜，而且操作简单，这可以为花园里的土壤提供高质量的肥料。
Individual composting systems can be relatively easy and inexpensive, and provide quality inputs for garden soils.
在基于GIS的土壤资源管理信息系统中，最基本的操作是对地图的操作、属性数据的查询和统计以及空间数据的查询。
In the soil resource management information system based on GIS, the most basic operations are the operation of map, the attribute data inquiry and statistics and spatial data inquiry as well.
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