Services are for methods that go beyond simple CRUD operations on a single domain object.

服务是为在单一区域对象上超越简单CRUD操作的方法而准备的。

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However, for security reasons, that AJAX mechanism is limited to getting data from a single domain.

然而，出于安全性的原因，AJAX机制只限于从单一域获取数据。

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A domain specific language (DSL) is used to describe the (possibly narrow) elements of a single domain.

领域特定语言(DSL)用于描述单一域中的元素(可能范围很小)。

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Facebook, in a blog post, on Friday said it discovered the attack after finding a suspicious Internet domain in its computer logs that it traced to a single employee laptop.

WSJ: Apple Hit by Hackers Who Struck Facebook

The site provides a single order form for registering or backordering large volumes of domain names with partner registrars.

CNN: New service back-orders domain names

The commission says the new domain name should be particularly useful for companies which operate across the European single market, giving them a pan-European identity on the internet.

BBC: NEWS | Europe | EU to launch its own web domain