目前有三个组。

There are three groups now.

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是应该创建三个组？

Should you create three groups?

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研究人员使用了疾病控制中心的生长曲线表，他们把小孩分成了三个组。

Using growth charts from the Centers for Disease Control and Prevention, the researchers lumped kids into one of three groups.

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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。

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Because it takes three units where there's only four choices at each position to have at least 20 unique combinations.

因为每个位点上仅有四种可能性,只有采用三个碱基一组,才能取得至少二十种不同的组合方式

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The finding, which is not a subtle finding, is that liking goes up in the three group and liking goes down in the ten group.

虽然此研究的发现并不精确，但它却表明,在列举三个特征的组里,喜爱程度有所提高,而在列举十个特征的组里,喜爱程度有所下降。

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