这种隔离层对于SOA来说非常重要，这是因为它使得数据库厂商的产品、OS平台、信息位置、数据格式以及物理数据模型透明化。
The insulation layer is extremely important to SOA because it allows transparency of database vendor products, OS platforms, information location, data format, and a physical data model.
由于要处理的代码模块有成百上千个，因此最佳起点是显示找到错误的输出位置，然后从该位置开始逆向查找来隔离问题。
With hundreds of code modules to deal with, a good place to begin is where the output revealing the bug is found, then work your way backward from there to isolate the problem.
垃圾邮件隔离为标识为垃圾邮件、不应传递到组织内的用户邮箱的邮件提供临时存储位置。
Spam quarantine provides a temporary storage location for messages that are identified as spam and that should not be delivered to a user mailbox inside the organization.
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