英语语法分析

The page tables are usually not pageable.

网页表格通常不分页。

This would not be a problem in most circumstances, except that the operating system must make sure that there is always some pageable memory available to other applications.

如果操作系统需要给其它应用程序分配一些可分页的物理内存，而又没有足够的内存时就会发生问题。