Admiral Mullen says while comparisons between Iraq and Afghanistan are not perfect, some lessons learned in Iraq in recent years can apply.

VOA: standard.2009.11.04

So the lessons to be learned, after years of watching this, is that the norm is change.

因此在观察许多年后，我发现了经验，改变是一种常态。

普林斯顿公开课 - 领导能力简介课程节选

"As I have made clear the primary objective of the committee will be to identify lessons learned.

VOA: standard.2009.06.15

(Speech) Ping said one of the lessons learned is that the world is paying for "the irresponsible and lax behavior" of large financial companies whose philosophy was to make short-term profits.

VOA: standard.2009.11.08

I think that's part of the frustration." DeAngelis says the strategy going forward must be to fight the battle on many fronts, building on the lessons learned from research,detection and treatment.

VOA: standard.2010.03.25

Author Peter Heller says he hopes the lessons he learned from surfing, and shares in his book,"Kook,"

VOA: standard.2010.08.04

And even today,America, despite the lessons that it has learned, it still relies heavily on the military,".

VOA: standard.2009.03.26

International Olympic Committee President Jacques Rogge told reporters Sunday that the tragedy must not be forgotten and that lessons can be learned from it.

VOA: standard.2010.03.01

One of the lessons Mosee learned early on was the value of an education.

VOA: standard.2009.12.04

In handing down the sentences, chief judge Adem Ibrahim told the condemned men they should have learned lessons from previous convictions stemming from violence that followed Ethiopia's last national elections in May 2005.

VOA: standard.2009.12.23

"But having learned lessons from the first elections that there was widespread fraud, irregularities and fraudulence, we will try our best in close coordination with Afghan leadership and Afghan institutions and other international major partners to make this election as fair and free of fraudulence,"

VOA: standard.2009.10.20