Everyone loves a costume party. ." And when it's the world's biggest comic book convention - some find it simply too hard to resist dressing up.

VOA: standard.2010.07.23

I think so. But video phone has been very hard to achieve. It's either been to be expensive, or too crowded, or can we use the internet to finally introduce video phone and this is different from video on-demand.

我也这么认为，但视频电话要成功很困难,它要么很贵，要么很拥堵，或者我们是否可以使用互联网引入视频电话,这与随需视频是不同的。

麻省理工公开课 - 媒体、教育、市场课程节选

There's a very interesting theme here and it's not too hard to pick up.

这其中有个很有趣的主题,我们不难发现

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选