At Bagram air field outside Kabul, Sergeant First Class Randy Geringer helps train 82nd Airborne Division soldiers to drive the M-ATV.

VOA: standard.2010.08.01

I went into the positive psychology, into the field of psychology, as I mentioned in the first lecture, because I was unhappy here.

我之所以研究积极心理学，探索心理学领域，正如我第一节课时提到的，是因为我不快乐。

哈佛公开课 - 幸福课课程节选

How did you get into that field in the first place?

你最初怎么进入这个领域的呢？

什么是认知科学？ - SpeakingMax英语口语达人

More than 55,000 people turned out for the first World Cup Qualifying match held at Soldier Field, home of the 1994 World Cup opening game.

VOA: standard.2009.06.07

First,he had 1,500 tons of debris removed from a Russian field station in Antarctica.

VOA: standard.2009.12.10

(Spiegler was among a handful of people who helped create the field.) In their first case, the lawyers representing the East German government, recovered several portraits owned by one of the country's museums.

VOA: standard.2010.07.26