Perls and his colleagues publish their study in the online edition of the journal Science.

VOA: standard.2010.07.14

We do expect the majority of the students to tackle, as you'll see tonight when the PDFs go online at 7 PM, the so called standard edition of each problem set.

我们希望你们大部分能解决这些问题，你将会看到我们下午7点钟,会把PDF放到网上去，也就是每套问题的标准版本。

哈佛公开课 - 计算机科学课程节选

We do expect the majority of the students to tackle, as you'll see tonight when the PDFs go online at 7 PM, the so called standard edition of each problem set.

我们希望你们大部分能解决这些问题，你将会看到我们下午7点钟,会把PDF放到网上去，也就是每套问题的标准版本。

哈佛公开课 - 计算机科学课程节选