When an application opens a file handle to read in so it can process a document, it typically reads from the file and then has no further need for the file handle.
当应用程序打开一个文件句柄读取文件以处理文档时，它通常读取文件后就不再需要文件句柄了。
On the other hand, when a position opens up because the incumbent in the job is being promoted, that person is probably the best one to handle the training.
其实，那个由于某个职位空缺而获得升职的人，才是进行培训的最佳人选。
An application opens a handle to your device, whereupon the system sends you another IRP. Your dispatch routine does a little work and returns.
一个应用为你的设备开启一个处理，因此这个系统给你发送另一个IRP。你的分配程序完成一些工作并返回。
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