主要有两种类型的白细胞：吞噬细胞(中性粒细胞和单核细胞)和淋巴细胞，它们是人体免疫系统的一部分，协助打击感染。

There are two major types of white cells: germ-ingesting cells (neutrophils and monocytes) and lymphocytes, which are part of the body's immune system and help to fight to infection.

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RUNSTATS收集两种类型的数据分布统计信息：频率统计信息和分位数统计信息。

RUNSTATS collects two types of data distribution statistics: frequency statistics and quantile statistics.

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在第1部分中提到过，有两种类型访问方法：表空间扫描(TBSCAN)和索引扫描(IXSCAN)。

As was mentioned in the previous article, for single table access, there are two types of access methods: table space scan (TBSCAN) and index scan (IXSCAN).

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