[qǐ yīn]
cause; origin; as a result of
arise from a mere trifle
起因于一件小事
the cause of the accident
事故的起因
origin of the dispute
爭(zhēng)執(zhí)的起因
The earthquake was the occasion of the building's collapse.
地震是房屋倒塌的起因。
The fire is of suspicious origin.
這場(chǎng)火災(zāi)起因可疑。