If we only study bookishly, but do not apply such knowledge.

如果不努力去实行，只是学习书本上的知识；

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"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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So we have only their bones, or fossils,to study.

VOA: special.2010.06.04

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

this is why Maslow said human nature and human potential has been sold short, when we only study the average.

这就是为什么Maslow说人性,和人的潜能会被削弱，如果我们只研究平均水平的话。

哈佛公开课 - 幸福课课程节选

If we would only study what he REALLY did, we can learn a tremendous amount about real demand creation, and put it to work for our business and our economy.

FORBES: How Demand Affects Your Business

For this study we interviewed only people in executive positions, so any young person answering this survey worked in what is most likely a stressful position and had to work very hard to get there.

FORBES: Millennial Anxiety in the Workplace

We think it's worth mentioning only as a case study in how flaky performance numbers can be.

FORBES: Winning streak