The three-year study followed a group of French women in their eighties who were nursing-home residents.

此项为期三年的研究追踪了一组年届八旬的法国妇女，她们均为私人疗养院居民。

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The three-year study will look at how chemicals are passed on from mother to foetus, and how this impacts on the foetus.

为期三年的研究将着眼于化学物质如何由母亲传递给胎儿，以及如何影响胎儿的。

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In the first study, three-year-olds watch two videos shown side by side.

在第一项研究中，三岁的孩子们观看了并排播放的两段视频。

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But a three-year study showed that beetles like to feed more on the transgenic plants, increasing cases of wilt disease.

VOA: special.2009.10.27

The study examined employment records for eight cities in Minnesota for a three-year period through two thousand six.

VOA: special.2009.05.27

The water company identified the measures after a three-year study, in partnership with the Environment Agency and Redcar and Cleveland Council.

BBC: Northumbrian Water to put ?6m into Saltburn water works

Both studies missed their main goal, but the more recent one--a three-year, 124-patient study--shows that patients on the drug lived, on average, an extra four months.

FORBES: The Danger In Dendreon

Almost two-thirds (65%) of the 11, 014 five-year-olds included in the study watched TV between one and three hours a day, 15% watched more than three hours and less than 2% watched no television at all.

BBC: TV time 'does not breed badly behaved children'