对这种疾病已进行了广泛研究。
戴维·麦克莱兰博士对100个年龄在18岁到60岁之间的人进行了研究,以证明自己的论点。
Dr. David McCleland studied one-hundred people, aged eighteen to sixty, to prove the point.
他们对猴子和海豚进行了研究,提供证据证明这些动物具有感受不确定性的能力。
They did studies with monkeys and dolphins that provide evidence that these animals have the ability to feel uncertainty.
There are groups of people who have studied the impact of Trans fats on health for a number of years.
有些人已对反式脂肪,对健康的影响进行了数年的研究
I studied German for about 6 months in Berlin.
我在柏林对德国进行了6个月的研究。
The second one--the second study illustrates this issue even more clearly.
第二个研究,更加清晰的对该问题进行了阐述
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