界，通过课堂演讲、课后讨论、会议、指定读物还有播客（pod casts）进行的 过量的信息检索也是消极的。
基于4个网页-相关网页
pod-casts 听播客
The Internet comes to rescue here through pod casts and videos from speaking events.
在这一点上，互联网帮上了忙，它可以提供播客和演讲比赛的视频。
youdao
There are the aforementioned 181 million blogs, but only 200, 000 pod casts in existence.
FORBES: Does it Matter That Google Conceded the Podcast Market to Apple?
In a blog post (he he) Google announced it was discontinuing Google Listen, an application it launched in 2009 to search for and play pod casts.
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