"You can't really compare today's rates with the rates of 10 years ago,20 years ago."

VOA: standard.2010.02.10

Then you can ask the other people to do it too and you can compare with each other.

也可以叫别人这样做,然后相互比较一下得分。

耶鲁公开课 - 心理学导论课程节选

You can't compare a pair of shoes with the child's life."

你不能拿一双鞋子和一个小孩的生命比较“

普林斯顿公开课 - 人性课程节选