The page section in the output indicates current paging status of your system; pi column indicates number of pages read into the memory and po column indicates number of pages paged out of the memory.

输出的 page 部分指示系统的当前分页状态；pi 列指示读入内存的页数目，而 po 列则指示移出内存的页数目。

If you have large number of Po, for example thousands of pages, then your system may suffer from insufficient memory.

如果有较多po，例如几千页，那么您的系统就可能缺乏内存。

The recalled cribs have the production date, product order (PO) number, item number, and color printed on a label attached to the footboard or headboard.

所召回的婴儿床带有生产日期、产品订货号(PO)、商品号，以及颜色印在床脚板或床头板上所附的标签上。