These activities include heap space re-sizing, reclamation of memory no longer used, moving data from one place to another and so on.

重新划分栈空间大小、回收不再被使用的内存、将数据从一处移到另一处等等。

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Biological Reclamation refers to the use of biological, and other technical measures to restore soil fertility and biological productivity, and establish a stable layer of plant activities.

生物复垦是指采用生物等技术措施恢复土壤肥力和生物生产能力，建立稳定植物层的活动。

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