The area on magnetic disks used for work in process ; not permanent or even semipermanent .
用来进行工作的磁盘域，它不是永久性的甚至不是半永久的。
Based on his findings , pembrey speculates that smoking , nutrition , and perhaps other lifestyle factors can cause semipermanent changes in the germ line during these critical periods .
When the collection grows bigger , he hopes to set up a semipermanent museum for these books , returning them to their original lives : browsing copies .
