Those in the control group not only didn't see a grade increase, they had lower grades than the grading before the study began.

对照组的学生不仅成绩没有提高，而且比研究开始前的成绩还要低。

youdao

Before going to Huawei, he was CTO of BT Group, one of the highest-profile technology gigs in the telecom industry.

在去华为之前，他是英国电信集团的首席技术官，这是电信行业最有知名度的技术工作之一。

youdao

One needs the designers, and perhaps the regulators, before the builders and operators, and each group of workers in training has to know there is work waiting beyond graduation.

我们需要的是设计师，或许还有监管者，这些都优先于建筑商和运营商；且每一群接受培训的工人都必须清楚，毕业后还有工作等着他们去做。

youdao

In the last show before the break, the group competed against two other high school glee clubs, and won the competition.

VOA: special.2010.01.08

Before the collision, Iridium had a group of sixty-six satellites in orbit.

VOA: special.2009.04.01

A group of current and former football players are staging a pantomime before a rapt audience in the Mapune Mall in Soweto.

VOA: standard.2010.05.29

And we talked a lot about -- in the meeting with the larger group before the press statement -- in once that -- they're obviously setting up and making some preparations in the parish for how to deal with different aspects of the slick as it comes.

WHITEHOUSE: Aboard Air Force One En Route Andrews Air Force Base

He was born in Algeria in the 1970s and served in the Algerian army before joining the Salafist Group for Preaching and Combat, which was heavily involved in the Algerian insurgency in the late 1990s and early 2000s.

CNN: Algeria attack may have link to Libya camps

If there was any surprise, it was that the price band of the new offerings is higher than the group that was already in market before the show.

FORBES: Ultrabooks: Parade Of Beauties At The Consumer Electronics Show