就目前而言，它构成了他们的主要危险。

For the moment, it constitutes their chief danger.

youdao

年龄是溺水的主要危险因素之一。

Age is one of the major risk factors for drowning.

youdao

异种移植存在的主要危险是传播疾病。

The main risk in xenotransplantation is the transmission of diseases.

youdao

There was The Seven Country Study, which was like The Framingham Study, where heart disease risk factors were mentioned, but he also did a very famous study on people starving.

这里提到的七国研究,性质和弗明汉研究差不多,主要研究的是影响心脏病的危险因素,他还做了一项著名的关于人们挨饿的研究

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选