At least two weeks before the quiz.

至少在测验之前两周。

麻省理工公开课 - 计算机科学及编程导论课程节选

Two weeks after the Columbine massacre, Ludlow Colorado I got called before the U.S. Senate Commerce Committee to testify on the relationship of youth culture and violent entertainment.

科罗拉多可伦拜高中枪杀案，事发两周后,美国参议院商务委员会给我打电话,让我参加一场听证会,主题是青年文化和暴力性娱乐的关系。

麻省理工公开课 - 媒体、教育、市场课程节选

As before, as in the Downs or Hoteling model, we discussed already a few weeks ago, we're going to assume that voters are evenly spread along the line.

像之前一样,就像当斯或霍特林模型,我们几周前讨论的,我们将假设选民,平均分布在这条线上

耶鲁公开课 - 博弈论课程节选