Sixteen teams are taking part, divided into four groups.

16支队伍参加，它们被分成4组。

《柯林斯英汉双解大词典》

The students were into four groups before doing experiments.

学生们在做实验前分成四组。

youdao

Deyang has been sorting its rubbish into the same four groups since several years ago.

德阳从几年前就开始将垃圾分成同样的四类。

youdao

It must have fourteen lines, with three groups of four lines that set up the subject or problem of the poem.

VOA: special.2010.01.06

And I've divided these into two groups, the big three and the more interesting four.

我将其分为两组，三大因素和四个有趣因素。

耶鲁公开课 - 心理学导论课程节选

Wagon trains -- groups of wagons -- rode in four lines across the land when they passed through dangerous country.

VOA: special.2009.03.30

The orchestra is divided into four groups, and their music progresses at different speeds simultaneously.

ECONOMIST: Elliott Carter

Dr Pollick and Dr de Waal studied four groups of apes held in captivity.

ECONOMIST: Evidence that the first words were movements, not sounds

An amino acid consists of a carbon atom with four groups of atoms attached to it.

ECONOMIST: Folding stuff