And so, when you think about how much cement concrete are consumed annually on the planet, this becomes a considerable point source of greenhouse gas emissions.

当你想到,在地球上每年要消耗多少的水泥混凝土的时候,这将是温室气体排放的,一个主要来源。

麻省理工公开课 - 固态化学导论课程节选

with the cement and the statue and stuff, so it's a lot different.

现在这里都是水泥钢筋建筑物、艺术雕塑，所有的这些，都跟之前不一样了。

联合广场的变化 - SpeakingMax英语口语达人