Comparison with a control group of meat-eating dogs would render this study even more meaningful.

如果和食肉的对照组宠物狗进行比较，这个调查将会更有意义。

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However, you might benefit from a comparison of your study habits to the tips presented here.

但是无论如何，你都可以通过比较你自己的学习习惯和下面这些建议来获得一些有益的东西。

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A careful study of all these figures and a comparison of the movements of various stocks will convince you of their value.

小心的学习这些图表，并将他们和股票的变化做仔细的对照，将使你确信这些图表的巨大价值。

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The study does not allow a direct comparison of men and women's stress coping mechanisms, because only men were included.

MSN: Stress turns guys into social butterflies

One examined 29 patients with Crohn's disease and found that after six months, 21 were considered remitted. (There wasn't a control group for comparison.) The other was study of 54 patients with ulcerative colitis.

WSJ: In a Squeaky-Clean World, a Worm Might Help Fight Disease

Davies and Molloy are therefore properly cautious with their conclusions, but nonetheless note that a comparison of the beginning and endpoints for their study, which minimizes the La Nina contribution, still showed a decline in cloud height.

FORBES: An Unsettling Week For Global Warming's 'Settled Science'