该研究是由美国华盛顿大学圣路易分校的Herman Pontzer 博士及其同事共同完成的。 他们通过估算恐龙在活动时所消耗的能量，得出了该结论。
The US scientists led by Dr Herman Pontzer at the University of Washington, St Louis, based their findings on the estimated amount of energy dinosaurs must have expended moving about.
在此之后，他回到学校，这一次在美国圣路易斯华盛顿大学的。
After that, he returned to college, this time at Washington University in St. Louis.
根据美国圣路易斯华盛顿大学心理学教授托马斯•罗德鲍的说法，几乎每个人或多或少都会受到社交焦虑的困扰。
According to Thomas Rodebaugh, a psychology professor at Washington University in st Louis, US, almost everyone suffers from at least a little social anxiety.
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