用户可以在方便的时候再去对它作出反应，而不会被打扰，并可以在屏幕上显示消息或把它打印出来。

Users can respond when it is convenient, without being interrupted, and can get their message either on-screen or in the printed form.

youdao

电子函件传送消息已经代替了电话。 用户可以在方便的时候再去对它作出反应，而不会被打扰，并可以在屏幕上显示消息或把它打印出来。

E-mail has replaced the telephone for many messages．Users can respond when it is convenient，without being interrupted, and can get their message either on-screen or in the printed form．

youdao