We used the therapia group and contract group to observe the clinic effect.

设治疗组、对照组，观察临床疗效。

youdao

Research published in the fourth week of July 2003 found that the group of people, who ate high-fiber, high-soy food had lowered LDL(the bad cholesterol) by 28.6%, comparing the contract group.

在2003年三月底的一个公众调查显示，吃高纤维，豆制品含量高的人较正常人的坏胆固醇低28.6%。

youdao

Valas leaves the group at this point, his contract fulfilled.

此时，瓦拉斯履行了他的合同，离开了队伍。

youdao

Spencer Dickerson of the U.S. Contract Tower Association, an airport industry group, said contract towers are taking a disproportionate brunt of the closures.

CNN: FAA begins process to close 168 towers on April 1

However the Department seems to have understated the long-term risks when awarding the contract to First Group.

BBC: What derailed the Transport Department

If you're kind of organising your own cleaning contract for a group of streets, someone else is doing it - isn't that better done by the local council.

BBC: Politics Show, Sunday 23 October 2005