The compiler interacts with the user through an implementation of the Messenger interface.

通过Messenger接口的实现，编译器与用户进行交互。

youdao

Messenger is an interface that XM uses to report progress and errors to the user.

Messenger 是一个接口，XM 用它来向用户报告进度和错误。

youdao

From the very beginning, the user interface has been abstracted through the Messenger interface.

从一开始，就通过Messenger接口将用户界面抽象化了。

youdao

The calls, however, can only be made to another user who has Messenger installed on their iPhone.

BBC: Facebook adds free calling feature for US iPhones

Focusing on integrating Windows Live Messenger into Skype and simultaneously providing a better user experience for chat could be a smart move for Microsoft, especially as Skype is so heavily integrated into Windows 8.

FORBES: Report: Microsoft To Kill Windows Live Messenger