My boyfriend has ordered a three-tier cake for my birthday.

我男朋友已经为我预定了一个三层的生日蛋糕。

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Cognos 8 BI features a three-tier architecture, as illustrated in Figure 2.

Cognos 8 BI提供一个三层的体系结构，见图2。

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The hardware was configured in a three-tier environment using various pSeries AIX servers.

硬件是在一个使用不同 pSeries AIX 服务器的三层环境中配置的。

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Deputy John Gollop said it could be part of a three-tier system offering different types of buses for different purposes in Guernsey.

BBC: Guernsey deputy wants double-decker buses like Jersey

Graham Newman, cabinet member for education, said it was a "fact" that pupils educated within a two-tier system outperformed those educated within a three-tier system.

BBC: Suffolk middle school closures continue

The RAC also wants to see the introduction of a three-tier warning system for over-the-counter drugs so drivers know at a glance which drugs pose a driving hazard.

BBC: Tests for drug drivers