two level address的意思|示意

To address application-level security requirements of SaaS, your architecture should address authentication and authorization requirements. Two scenarios in this article illustrate.

要处理SaaS的应用程序级安全需求，您的体系结构应该处理身份验证和授权需求。

A correct writing form for business correspondence shows the receiver's address at the left, under the level of the date and two lines above the salutation, the same as it appears on the envelope.

正确的商业信函格式应将收信人的地址放在日期下方，距敬称上方两行处以上。与信封排列格式相同。