is not a prudent step to take," In their letter to President Obama, the lawmakers voice concern that any perceived military success in Afghanistan might create pressure to increase military activity in Pakistan possibly leading to dangerous destabilization in the region.

VOA: standard.2009.03.17

So there is about between 12-16 rules that are there if you learn them, just naturally your voice will take in fluctuation and intonations. So I had the opportunity to learn actually here in New Jersey from people.

大概有12至16条字母的发音规则,如果你学习了，那么很自然地你的声音,就会有起伏和音调,我当时正好有机会在新泽西学习这个。

普林斯顿公开课 - 人性课程节选