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extents
英：
美：
n.范围，实际范围（extent复数）；广度，盘区
1、Note that these do not have to be the actual
extents
of the shape - just the bits the train should not pass through.───注意：这些值不必是真实的范围值，只要设置得能够不让列车穿过即可。
2、A backup that contains only the data
extents
that were modified since the most recent partial backup of the same set of file groups .───这种备份仅包含自同一组文件组的最新部分备份以来发生了修改的数据区。
3、So compress, repack, and shrink might be able to reduce the total number of
extents
for a partition, just like the defragmenter.───因此，压缩、重新打包、和收缩可能会像碎片整理程序一样，能够减少分区总的区段数量。
4、If the largest free extent cannot cover two or more partition
extents
, the defragmenter sets an error code and returns.───如果最大的空闲区段无法涵盖两个或更多分区区段，碎片整理程序会设置错误代码并返回。
5、This tracks the
extents
that have been modified by bulk logged operations since the last BACKUP LOG statement.───跟踪自上次执行BACKUPLOG语句后，被大容量日志记录操作修改的区。
6、Therefore, each allocation unit has at least one IAM page for each file on which it has
extents
.───因此，每个分配单元在有区的每个文件中至少有一个IAM页。
7、This indicates that the sales table contains three
extents
.───这指出了销售表包含三个区段。
8、Log file
extents
can be specified as primary or secondary.───日志文件扩展可以指定为主扩展或次扩展。
9、Three
extents
can be seen in this table.───可以看到，该表中有三个区段。
1、caption text───标题文本
2、malt extract───麦精，麦芽膏；n.麦芽膏，麦精
3、extensile lateral───外展性
4、extremely difficult───万难；千难万难；难得要命；难上加难；极其困难的
5、extricate define───解脱定义
6、extensile approach───扩张进入法
7、extruding gun───挤压枪
8、happen next/crossword clue───下一个发生/纵横字谜线索
9、extortioner crossword clue───勒索者纵横字谜线索
10、extemporal definition───即席定义
结语：
Oracle回收表空间的几个方法，回收表空间有以下几个方法： 1. drop and recreate 2.truncate and restore with backup 3. alter table move tablespace；alter index XXX rebuild 4. exp/imp 5 alte 回收表空间有以下几个方法： 1. drop and recreate 2.truncate and restore with backup 3. alter table move tablespace；alter index XXX rebuild 4. exp/imp 5 alte 1. drop and recreate 2.truncate and restore with backup 3. alter table move tablespace；alter index XXX rebuild 4.