Raised body mass index is a major risk factor for heart disease, stroke, type 2 diabetes and other chronic diseases.

升高的身体质量指数是心脏病、中风、2型糖尿病和其它慢性病的一个重要危险因素。

youdao

For example, genes for insulin-like growth factor could enhance muscle mass.

例如，基因对于胰岛素增长因子能够导致肌肉量的增加。

youdao

The other big factor in the sites taking off internationally is simply having a critical mass of users.

让这两个网站走向国际化的另一个重要因素是：拥有大量的用户群。

youdao

Not that those types of games are any more a motivating factor in mass murder.

FORBES: CNN Picks Their Game to Blame: Starcraft?

Our study indicates that one explanatory factor was whether a country undertook mass privatisation.

ECONOMIST: The British army

And he points to the drug war and the resulting mass incarceration as a factor that has exacerbated the gap between rich and poor by excluding many poor, especially black, men from the workforce during the prime of their lives.

FORBES: Human Capitalism