要解决这些问题，可以删除无关的索引，添加一个新的索引，或者在某些表中周期性地清除大量过期的数据。
To solve these problems, drop the extraneous index, add a new index, or periodically clean out the large volume of obsolete data in some tables.
要删除一个工作表，只需要调用相应的工作表条目的delete方法。
To delete a worksheet, simply invoke the delete method of the corresponding worksheet entry.
这个过程可以从注册表删除一个键，使用时要谨慎。
This extended stored procedure will delete an entire key from the registry. You should use it very carefully.
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