Indexes are defined on all primary and foreign key columns to support efficient joins between the 12 tables.
全部主键和外键均定义了索引，来支持12个表之间有效的结合。
This is a critical time for suppliers to reassure their key customers in foreign markets of their continued commitment to support.
对供应商而言，这是一个保证他们在海外市场的主要客户继续支持承诺的关键时刻。
This is a critical time for suppliers to reassure their key customers in foreign markets of their continued commitment to support.
对供应商而言，这是一个保证他们在海外市场的主要客户继续支持承诺的关键时刻。
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