She gets sunburned even when she plasters herself from head to toe in factor 7 sun lotion.

即使她从头到脚涂抹上防晒系数是7的防晒霜，她也会被晒伤。

《柯林斯英汉双解大词典》

Physical activity is an important factor in maintaining fitness.

体育活动是保持健康的一个重要因素。

《柯林斯英汉双解大词典》

Stress is often a factor in the development of long-term sickness.

心理压力常常是形成长期病的一个因素。

《牛津词典》

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

And the top answer that was 82% was the Internet, something like 60% said they thought the availablity of guns was a significant factor in the Columbine's shooting.

高达82%的人认为是因为网络，约有60%的人认为,枪支的使用是一个重要因素,造成了这起枪杀案。

麻省理工公开课 - 媒体、教育、市场课程节选

If you could introduce that gene you'd make the chemical, in this case it's a protein called vascular endothelial growth factor.

通过导入一种生成特殊化学物质的基因,这种疗法中指的是一种蛋白,叫做血管内皮生长因子

耶鲁公开课 - 生物医学工程探索课程节选

As men more and more become fashion consumers, there is an inherent built-in growth factor in menswear as a business.

FORBES: Making Money In Style

So whether or not that was a factor in this case, it certainly is a factor in some tension that exists.

CNN: STORY HIGHLIGHTS

However, the detractors of solar do not factor in all of the subsidies given to non-renewable energy (hundreds of billions of dollars a year in the USA), and they do not factor in the cost of our military to secure foreign oil supplies or our ongoing medical costs due to air pollution.

WHITEHOUSE: The Joy of Sustainability