永久性

Product dispositioned for scrap shall be conspicuously and permanently marked, orpositively controlled, until physically rendered unusable.

决定销毁的产品应该被打的标记，或者被严格控制，直到经过处理而真正不可再用为止。

The area ( s ) on magnetic disks used for work in process ; not permanent or even semipermanent.

用来进行工作的磁盘域,它不的甚至不半的。

Deforestation (disafforestation) The permanent removal of forests, especially by means of logging for commercial timber and clearing for agriculture and human settlement.

砍伐森林（滥伐）：为了商业木材的使用，农田的开垦以及人类的建筑用地的移除森林。

A file of data considered permanent or semipermanent, i.e., an arrangement or ordering of a series of record; also, a single record from such a file.

一种或半的数据文件,也就一系列记录的排列和定序;也指这种文件中的单个记录。