service domain的用法和樣例：
例句
- The service level definitions for users created during the service domain preparation phase are used as contract templates.
服務域準備階段創建的用戶服務級別定義被用作契約模板。 - A main service domain establishes itself as a single logical image of a virtual service made up of multiple service instances.
主服務域將自身建立為由多個服務實例組成的虛擬服務的單個邏輯映像。
