What we do know is that as we include longer time intervals, the record shows increasing evidence of slow swings in climate between different regimes.
2
固定长度的记录要优于可变长度的记录，因为 DB2 代码专门为处理固定长度的记录进行优化。
Fixed-length records are preferred over varying length records, because the DB2 code is optimized for processing fixed-length records.
3
而对于可变长度的记录，其长度可能会变得不再适合初始页，因此必须将其转移到其他页。
However, a record of variable length can possibly be updated to a length that no longer fits on the original page, and so it must be moved to another page.
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