如果页面已满，则在添加新数据时，系统必须拆分页面，因而会影响性能。
Once a page is full the system must split the pages if new data is added, impairing performance.
如果页面已填满，则在添加数据时，系统必须拆分页面，从而导致性能降低。
When a page is full, the system must split the page if data is added, which reduces performance.
如果页面已填满，则在添加数据时，系统必须拆分页面，从而导致性能降低。
When a page is full, the system must split the page if data is added, which reduces performance.
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