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

VOA: special.2009.01.13

So anyway, have a wonderful weekend with your parents here, and I will see you next week.

不管如何，和你们的父母一起,享受美好的周末吧，我们下周见。

耶鲁公开课 - 政治哲学导论课程节选

Next week many parents,students and administrators will express their appreciation through gifts,cards,flowers or other special treats.

VOA: special.2010.04.30