Group 5 is a normal control group.

实验5组为正常对照组。

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The normal control group did not exercise;

正常对照组不做运动；

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The first group is the normal control group.

第一组为正常对照组。

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We found that, compared with 32 normal people in a control group, psychopaths had an 18% smaller amygdala, which is critical for emotions like fear and is part of the neural circuitry underlying moral decision-making.

WSJ: Neurocriminology: Inside the Criminal Mind

Four platelet-injected patients and one in the control group improved to normal.

WSJ: The Research Report: How to Treat Burns With Running Water

Each one is naturally rich in vitamin E - and other potentially important minerals - and for each there is a similarly tasting "normal" soup that could be used for the control group of pregnant women.

BBC: 'Super soup' test in asthma trial