在新加坡，每辆轿车上都装有一台在通过时自动触发过路收费亭的数字式异频雷达收发机。

In Singapore, every car is fitted with a digital transponder that triggers automatic tollbooths as it passes.

《柯林斯英汉双解大词典》

您使用请求向状态机发送消息，以触发状态转换。

You use the request to send a message to the state machine to trigger a state transition.

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当用户在聊天窗口中输入的文本包含特定的关键字时，就会触发客户机向数据库请求信息(图3中的2)。

Triggering the client to request information from the database (2 in Figure 3) is controlled through particular keywords contained in the text entered by the user into the chat window.

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