But climate change negotiators worry that without quick action, the carbon footprint of countries like India and China will rise dramatically as their fast-growing economies propel millions into the middle class.

VOA: standard.2009.11.27

And the intervention is not a quick fix, overnight change,"we can" seminar-- five-year intervention.

干预不是快速修复，不是能一夜改变的，他们实行五年干预。

哈佛公开课 - 幸福课课程节选