Where can be 1, 2, or 3, depending on which of the three services you want to invoke.

其中可以是1、2或3，这取决于这三个服务中的哪一个是您希望调用的。

youdao

Each of the three services allows users to share the videos they've selected and categorized.

这三个服务都允许用户分享他们所选择的视频并且分类。

youdao

Figure 1 represents the three fundamental operations performed by the three fundamental components of the Web services architecture.

图1代表Web服务体系结构的三个基本组件所执行的三个基本操作。

youdao

These include the funerals of three American presidents and national prayer services.

VOA: special.2009.05.22

While many professional soldiers feel that an Army with the five brigades, the force established under the Coalition government's Strategic Defence and Security Review (the SDSR), has sunk below a critical level, I would argue that they have probably got off the lightest of the three services.

BBC: Jubilees show UK's declining ability to protect itself

Alongside the National Security Council discussions there have been separate talks within the Ministry of Defence (MoD) itself, involving the heads of the three armed services - the Royal Navy, the Army and the RAF.

BBC: Q&A: Strategic defence and security review

Members of the three armed services, military bands and huge crowds of flag-waving well-wishers lined the route as the royals made their way from a reception in the City of London to a formal lunch at Westminster Hall.

CNN: Queen's balcony wave, flyover cap Diamond Jubilee celebrations