There are no significant differences between the two groups of students.

这两组学生没有明显差别。

《牛津词典》

Fresh groups of guests arrived.

新客成批到达了。

《柯林斯英汉双解大词典》

She split the class into groups of four.

她按四人一组把全班分成若干小组。

《牛津词典》

Scientists believe large groups of wolves became stuck when they came to feed on animals already trapped in the asphalt.

VOA: special.2010.04.07

A studio of three hours' lecture in a large lecture hall, and two hours of recitation in groups of thirty.

在一个大的讲堂的教室里,讲三个小时讲座，并以三十人为一组,进行两小时背诵。

麻省理工公开课 - 媒体、教育、市场课程节选

Now they rent them out to other groups of, or other corporations, other companies.

现在他们已经把房子租给其它企业或者公司了。

旧金山的报纸 - SpeakingMax英语口语达人

The group has been travelling, and waiting, with two groups of students driving ex-army Green Goddesses.

BBC: Customs row puts charity fire engine into reverse

Stonehenge and Avebury, in Wiltshire, are among the most famous groups of megaliths in the world.

UNESCO: World Heritage

Our Freddy had begun snuffling close behind groups of heli-tourists, perhaps smelling snack food.

BBC: Five days in Russia's Ring of Fire