英语语法分析

Skeptics say these machines do not represent a great improvement over video teleconferencing.

怀疑论者表示，这些机器不能代表超越视频会议的重大进步。

Many argue that video teleconferencing and instant messaging have replaced the need for virtual world interaction.

很多人认为视频会议和即时通讯已经取代了虚拟世界互动。

Depending on circumstances, this could be achieved through email, teleconferencing or other Internet-based communication.

根据条件不同，可以通过电子邮件、电视电话会议或者其它因特网通讯手段做到这一点。