It was a terrible slum -- as such places are called -- where too many are crowded together, where the houses and streets are dirty and full of rats.

VOA: special.2010.08.01

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

I don't really like central London. It's just too crowded for me.

我很不喜欢伦敦市中心。对我来说，那里太拥挤了。

怡人的的汉普斯特德 - SpeakingMax英语口语达人