当然，保留这类数据的一个缺点是占用磁盘空间，但在许多情况下，在需要时能够使用这些数据的优点远大于其磁盘空间成本。
The drawback of keeping this much data is, of course, disk space, but the benefit of having this data available when needed outweighs the cost in most cases.
保留到反射对象的引用会造成这些类保持为活动状态并继续占用空间。
Holding references to the reflecting objects causes these classes to stay alive and continue occupying space.
名称空间建议书文档本身将这些声明当作保留属性，这些声明长得足以介绍它们。
The Namespaces Recommendation document itself refers to these declarations as reserved attributes long enough to introduce them.
渔民也抱怨若要强行保留整只鲨鱼的完整性，势必会占掉船上宝贵的储存空间，这些空间可以用来装更多有价值的渔获。
They also complain that being forced to keep the whole shark body would take up valuable storage space in their vessels that could be used for more valuable catch.
这些记录会以先前所保留的空间完成附加。
The records are appended using space that has been previously reserved.
回收这些电子产品对于保留垃圾填埋空间以及确保这些用于制造电子产品的危险品得以正确处理至关重要。
Recycling, or "E-cycling, " these and other electronic items is critical for preserving landfill space and for ensuring that hazardous materials used to make electronics are properly disposed.
回收这些电子产品对于保留垃圾填埋空间以及确保这些用于制造电子产品的危险品得以正确处理至关重要。
Recycling, or "E-cycling, " these and other electronic items is critical for preserving landfill space and for ensuring that hazardous materials used to make electronics are properly disposed.
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