But some operators are less pleased. Loren Rutherford of Nomad Adventure Tours says higher air fares to South Africa have hurt her moderately-priced camping safaris.

VOA: standard.2010.06.03

If you isolate those immature cells, some of them are less mature than others, some of them have more potential than others.

如果分离这些未成熟细胞,会发现有一些细胞成熟程度更低,它们比其他细胞更具潜能

耶鲁公开课 - 生物医学工程探索课程节选

Some people eat for comfort, some people get enormous psychological gratification from food, other people couldn't care less-- they have to be reminded to eat.

有人吃东西是为了寻求慰藉,有人通过吃东西,从食物中得到巨大的心理满足感,还有人对吃毫无兴趣,他们需要提醒,才会想起去吃东西

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选