"If we only study birds and mammals, we're only going to learn from those groups," he said. "This is one more distinct group we need to learn about."

“如果我们只研究鸟类和哺乳动物，那么我们只能从这两类动物中得到信息，”他说，“爬行动物是我们应该研究的另一个独特类别。”

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Only persistent study yields steady progress.

只有坚持不懈的学习才能取得稳定的进步。

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So for the ten patients in the study, doctors used a low amount of radiation to destroy only some of their marrow.

VOA: special.2009.12.16

No, because they were only interested in the question of when are anorexics born, so it made sense to only study those.

不，因为他们只对厌食症患者是,什么时候出生的这个问题感兴趣，所以只研究这些对象是有道理的。

麻省理工公开课 - 计算机科学及编程导论课程节选

Because very often,if we only study the average, we only see the average,we only see the geometric shapes and completely missed the children on the bus.

因为很多时候，如果我们只研究平均水平，那就只会看到平均的结果，只看到几何形状,完全忽略了汽车上的孩子。

哈佛公开课 - 幸福课课程节选

The only study which has detected XMRV in prostate cancer using primers set for unique sequences in the XMRV genome is Schlaberg et al 2009 (2).

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Mr Tarr said teaching should be rigorous and challenging, but it was "academic snobbery" to say you could only study history by taking lots of detailed notes.

BBC: Gove criticises 'Mr Men' history teaching

Fortunately, this not the only study to explore the potential for reducing cardiovascular disease and cancer in the general population by promoting adherence to a set of health guidelines.

FORBES: To Combat Some Big Diseases, We Should Focus On The Basics