Each of the four groups was divided into smaller groups for the recall test.

四组被测分成更小的小组进行回想测试。

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Then the offspring of the four groups, which were all raised in comfortable surroundings, were put through the same test.

而后，研究人员又对饲养于舒适环境中、四组鸡的幼雏进行了相同的测试。

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Overall, researchers didn't find major differences between the four groups, but the length and severity of colds was slightly worse among patients who didn't receive pills.

从总体上看，研究人员并未发现这四组病人之间有重大差异，但没有服用药片的病人的感冒病程略长、病情也略为严重。

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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 four groups are still with us, though some have changed more than others over the centuries.

ECONOMIST: Globalisation

The study came to two conclusions: One, there was no statistical difference health-wise between any of the four groups.

FORBES: Single People: Happy, Healthy, And The Majority

Of the four groups studied, two engaged in GHC behaviour - one had a preference for wrist-to-wrist GHC whilst the other preferred palm-to-palm.

BBC: Chimpanzee grooming is a 'postcode lottery'