三个组的胎盘效率差异均极显著（P<0.01）。

The difference of the placental efficiency of the three groups was highly significant(P<0.01).

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三个组的猪肉药物残留量和重金属残留量均符合我国规定的“无公害猪肉”的标准。

The residues of drugs and the heavy metal content in meat of all groups matched the standard of "no Public Harm Food".

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调查员根据分为每天使用150微克或者300微克剂量的睾酮，或者使用同类型安慰剂，或者模拟治疗三个组的814位女性所提供的治疗数据进行分析。

Researchers analyzed data from 814 women who were given daily doses of 150 micrograms or 300 micrograms of testosterone or a placebo, or dummy, treatment.

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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

耶鲁公开课 - 生物医学工程探索课程节选

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。

耶鲁公开课 - 心理学导论课程节选

Here's a group of sounds, different pitches and actually three different pitches in there, as opposed to just one pitch--one pitch, three pitches or three or four pitches, moving in different ways, kind of independent rhythmic chords, so that's the difference between monophonic, homophonic and polyphonic texture.

这是一组音,不同的音高,事实上三个不同的音高,相对于一个音高,一个音高,三个音高或四个音高,以不同方式运动,像有独立节奏的和弦,这就是单音,主音和复音织体的区别

耶鲁公开课 - 聆听音乐课程节选