Chat in Gmail already features video and voice chat, but the file transfer feature is currently still missing.

Gmail中的聊天功能已经支持视频和语音聊天，但目前还不支持文件传输。

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These are provided most notably by E-mail systems, chat services, and file-transfer facilities that offer nearly instant transfer of data, messages, music, photos, and videos.

这些功能主要由电子邮件系统、聊天服务以及文件传输工具来提供，以接近实时的速度传输数据、消息、音乐、图片和视频。

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According to daily logs posted on NOAA's website, others followed the exploration remotely using e-mail, on-line chat rooms, video streams, and file transfer sites to exchange information.

CNN: STORY HIGHLIGHTS