The finance and trade ministers were meeting before an APEC summit this weekend that is to include U.S.President Obama on his first trip to Asia as president.

VOA: standard.2009.11.12

This actually relates very closely to what we discussed in class on Friday before the long weekend, and what we were talking about is the energy levels of multielectron atoms.

这实际上与,上个长周末之前的周五的课上,我们所讨论的内容有着密切的联系，当时我们在讨论,多电子原子的能级。

麻省理工公开课 - 化学原理课程节选