The researchers compared cotinine levels to behavioral problems that parents observed in the children during a 2-week period.

VOA: special.2009.01.13

She's done fantastic work, showing how people who help-- whether it's helping five extra acts during the week-- it can be more; doesn't have to be restricted to five-- or people who help five extra acts during one day, it's actually contributing to their wellbeing.

她很好地，证明人们-,不论是在一周内多做五件好事-,可以更多;,不必局限于五件-,或者人们在一天内多做五件好事，都能让他们更幸福。

哈佛公开课 - 幸福课课程节选

It's because their pursuing something rather than running away from something-- " it is called "approach rather than avoidance goals"-- we'll talk about that during the week on goals.

因为他们在追求,而不是在逃离-,这叫“靠近而非逃避目标-,我们将在探讨“目标“时谈到。

哈佛公开课 - 幸福课课程节选

During their six-week voyage, researchers will employ a range of techniques to unlock some of the secrets of the giant marine mammals.

VOA: standard.2010.01.05

The report accuses both Israel and Hamas militants of committing war crimes during the three-week war in Gaza that began in late 2008.

VOA: standard.2009.10.03

At the rally site during the week, protest leaders and Mr.Thaksin in phone-in comments, said they were looking to challenge the existing bureaucratic elite.

VOA: standard.2010.03.20

U.S.officials hope it can be convened before key big-power discussions of the Iranian nuclear issue begin in New York during the third week of this month, on the sidelines of the U.N.General Assembly session.

VOA: standard.2009.09.11