His diet during his trips includes chocolate candies,nuts, potato chips,cookies, dried beef and energy bars.

VOA: special.2011.03.23

And then we do variety about their trips during the year, and all of those are led by students.

在接下来的一年，我们会开展各种远足活动，这些活动都是由学生自己领导的。

普林斯顿公开课 - 人性课程节选

And then we do variety about their trips during the year, and all of those are led by students.

在接下来的一年，我们会开展各种远足活动，这些活动都是由学生自己领导的。

普林斯顿公开课 - 人性课程节选