成因

tàn tǎo zhè yī shì gù de chéng yīn

探讨这一事故的成因

investigate the causes behind the incident

shí yóu chéng yīn

石油成因

reason for the formation of oil

ái zhèng chéng yīn

癌症成因

origins of cancer

tā men yǐ jīng qīng chu zhè gè wù lǐ biàn huà de chéng yīn

他们已经清楚这个物理变化的成因。

They have cleared up the cause of the physical change.

hǎi yáng chéng yīn

海洋成因

the origin of seas and oceans

zhè xiàng yán jiū kě néng huì wèi ái zhèng chéng yīn tí gōng zhòng yào de xiàn suǒ

这项研究可能会为癌症成因提供重要的线索。

This research might provide an important clue about how cancer develops.

zuì jìn de yán jiū shǐ rén men duì zhè zhǒng jí bìng de chéng yīn yǒu le gèng duō de rèn shi

最近的研究使人们对这种疾病的成因有了更多的认识。

Recent research has shed light on the causes of the disease.