The interface has a single one-way method called event_emission with a single parameter with a type of connector.

此接口只有一个单向方法，名为 event_emission，此方法只有一个参数，其类型为 connector。

youdao

The interface contains a single one-way operation that passes an instance of the request business object, as shown in Figure 3.

接口包含了一个单向操作，它将传递请求业务对象的一个实例，如图3所示。

youdao

Interactions are considered peer-to-peer message exchanges (that is, a request with an explicit response, a request with no response, or a single one-way notification).

交互被看作是点对点的消息交换(也就是一条有显式响应的请求、一条无响应请求或者单独一条单向通知)。

youdao

One way is the single-payer plan -- everybody is under a single system, like Medicare.

WHITEHOUSE: President Obama Speaks at the Associated Press Luncheon

The only serious omission on the CD is Strawberry Fields Forever - a number one single as a double A side with Penny Lane - and one can only imagine that the single was sacrificed to make way for one of George Harrisons' songs.

BBC: CD Review: The Beatles

One "Oh, by the way" patient can single-handedly cause a physician to run 30 minutes behind.

CNN: Long wait at the doctor's office? Blame the patients