"Because there are only a couple of previous records of eruption at this particular volcano, it is difficult to judge either how long the activity will go on there, or how long the volcano might then be dormant before it goes active again."

VOA: standard.2010.04.15

So this is a nice succinct way of recording what was in the previous two tables.

这样就把前两张表格的信息,更简明地表述出来了

耶鲁公开课 - 博弈论课程节选

It's simply material found on page fifteen of your textbook but let's review it. We say this is a beginning course so we assume no previous knowledge.

这是你们教材十五页上的一些简单材料,我们复习一下,我们说这是个入门课程,所以假设之前你们没有任何相关知识

耶鲁公开课 - 聆听音乐课程节选