Ghana's first winter Olympian may only compete in the slower slalom or giant slalom.

VOA: standard.2010.01.22

First of all, it will only be a minute or two at a time, maybe once or twice a lecture.

首先，每次只有一两分钟，一堂课最多不超过两次。

哈佛公开课 - 幸福课课程节选