"Last November,Iran announced that it would build In February, Iran said that it would begin to enrich uranium to nearly 20 percent-moving,closer to weapons-grade material."

VOA: standard.2010.06.09

However, if there are repeated, unexcused absences, there will be an adjustment in the grade calculation, and it will be worth twenty to twenty-five percent of your grade, and it will be a negative grade also.

然而，如果有反复的没有理由的缺勤，就会对这个百分比做些调整，出勤率就会占到你分数的百分之二十到二十五，当然也会是负面的评分。

耶鲁公开课 - 旧约导论课程节选

So it's really a training ground for the final paper, and we have found that people don't succeed in the course in the final paper without the training they get in section discussion, which is why section participation is worth ten percent of your grade.

所以讨论课也是为期末测试而训练的一个基础部分,我们曾发现没有在讨论课上的训练学生是没法,通过期末考试的，这也是为什么讨论课,的出勤率占你们分数的百分之十的原因。

耶鲁公开课 - 旧约导论课程节选