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.
它的缺点是会导致额外的操作，这就需要更多的执行时间，从而导致应用程序的性能降低。
The disadvantage is that you incur extra operations that take more execution time and make your application perform slower.
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