As with any study of this kind, it was unclear if that was the cause—or if breakfast-skippers were just more likely to be overweight to begin with.

就像任何这类研究一样，原因尚未可知，究竟是出于这一因素，还是那些不吃早餐的人本来就更容易增重。

youdao

This was a genuine mistake, but it did cause me some worry.

这纯属失误，但它确实令我有些不安。

《柯林斯英汉双解大词典》

But as with any study of this kind, it was unclear if that was the cause—or if breakfast-skippers were just more likely to be overweight to begin with.

但是，就像任何这类研究一样，原因尚未可知——即，还不清楚不吃早餐是否能导致他们更容易超重。

youdao

Her answer was this and it's got something to do with how a lost cause took hold too but she said, "Southerners love a good tale.

她是这么回答的,同时也解释了为何南方人始终无法释怀,她说,"南方人钟爱精彩的故事

耶鲁公开课 - 美国内战与重建课程节选

Kennan was attracted to the discipline this demanded, but it was a cause of endless frustration.

NEWYORKER: Getting Real

At times like this it was a cause of concern to me that Walter's friends made so much noise.

NPR: Excerpt: 'Trauma'

But whatever, or whoever was the cause of this crash, it will take a long time to convince Nigerians that their notoriously unsafe aviation industry is being made safe.

BBC: NEWS | Africa | Nigerians fly despite the risks