In fact, you could be sitting three years from now waiting before commencement and you can get that grade adjusted.

实际上，你可以从现在到知道毕业典礼前,一直坐等三年,你可以更正成绩。

麻省理工公开课 - 固态化学导论课程节选

Plato was born in 427, which is four years after the commencement of the Peloponnesian War.

柏拉图生于公元前，427，年，即伯罗奔尼萨战争,开始之后的四年。

耶鲁公开课 - 政治哲学导论课程节选