These programs, along with natural expansion of forests in some areas, have added more than seven million hectares of new forests each year.

VOA: special.2010.04.06

We can do that sort of: When you play tic-tac-toe with your seven-year old nephew or niece, you just look ahead and work backwards.

我们可能会这么做,当你和你七岁大的侄子或侄女,下三子棋的时候,你就会先预测,然后想

耶鲁公开课 - 死亡课程节选

They say the vaccines could be kept at thirty-seven degrees for a year or more with only small losses in the amount of vaccine.

VOA: special.2010.02.24

Drug-related violence in Mexico has killed more than seven thousand people since the beginning of last year -- often with guns bought in the United States.

VOA: special.2009.04.18

And they continued to play together, with a seven year break, until nineteen ninety-nine.

VOA: special.2009.03.01