Women tend to attribute their success to external causes such as luck.

女性往往把她们的成功归因于外因，如运气。

《柯林斯英汉双解大词典》

Deciding where the balance lies between nature and external causes can be difficult.

决定本性与外在原因的平衡点在哪里是很困难的。

youdao

If I do happen to die at 50, it'll most likely be from circulatory problems, cancer, infection or external causes.

但如果我不幸50岁的时候死了，极大可能是死于血液循环疾病、癌症、传染病或意外事故。

youdao

External causes play their part in determining the politics of the region, but a part only.

ECONOMIST: The Middle East

Deaths from circulatory system diseases and cancer actually decreased mildly, as did overall deaths from external causes (by a very respectable 5%).

FORBES: In Early 2013, Russia's Demographics Are Showing Ominous Signs Of Worsening

Encouragingly, external causes of mortality have continued to decline even faster than other causes: suicide, murder, and alcohol poisonings are down by 5%, 10%, and 18% respectively.

FORBES: Russia's Demographics Continue to Rapidly Improve