According to one study, students' academic performance is not the only decisive factor of their stress responses.
根据一项研究,学生的学习成绩并不是他们压力反应的唯一决定性因素。
This small-scale study looks at another possible factor. However, more research is needed into sleep patterns before any firm conclusions over sleeping positions can be made.
这些小规模研究总是想着其它的可能因素,然而在得出任何严格的结论之前需要更多的关于睡姿的研究。
The LHC will increase the energy at which we can study particle interactions by a factor of four.
LHC能够提供相足够能量来从一个因素(共有四个因素)研究粒子的相互作用。
Last year,a study in the medical journal Neurology found smoking to be an established risk factor in developing the disease.
VOA: special.2010.03.09
"Exposure to tobacco smoke is a risk factor for cardiac disease already in adolescents, and that's why this study supports that children and adolescents need smoke-free environments."
VOA: standard.2010.03.04
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