1 sentence

1. 他们将宇宙射线列为几个危险因素之一。

   tā​men jiāng yǔ​zhòu​shè​xiàn liè​wéi jǐ​ge wēi​xiǎn yīn​sù zhī​yī.

   They listed cosmic rays as one of several risk factors.

   Source: CCMatrix