Another new development is the addition of point-to-point video, which lets you easily expand an instant message to include a video or voice conversation with another user.

另一个新的开发是点对点视频，它可以使您轻易扩展即时消息，从而将与另外一个用户的视频或语音对话包括进来。

youdao

With E-mail, each message is sent as a single event, while instant messages allow for a smooth, ongoing conversation.

e - mail，每条消息通过单独的事件进行发送，然而即时消息允许流畅的持续不断的对话。

youdao