When human love relationships fail, they fail because they were entered into for the wrong reason.

如果人们不再相爱，那是因为当初这种爱就建立在错误的基础之上。

youdao

And they don't fail because they don't have something valuable to say; they all do -they fail because they stop writing; they stopped giving and providing valuable ideas to others.

他们失败也不是因为他们没有有用的东西可写。而是因为他们停止了写—他们停止将自己有价值的想法告诉别人。

youdao

Many diets fail because they are boring.

许多规定饮食因单调乏味都不奏效。

《牛津词典》

He said it would take longer to convince Afghans that the insurgency is going to fail, because they have been disappointed by the international military effort so far and because many view their government as inconsequential or corrupt.

VOA: standard.2009.12.09

Banks are in trouble and as you know - they're starting to fail because they the value of their assets in the market is falling rapidly.

银行陷入危机，并且你知道,他们开始破产因为他们,市场中资产的价值,在迅速的降低。

耶鲁公开课 - 金融市场课程节选

They fail because they are not international enough.

ECONOMIST: European financial regulation

Recognize the difference between good and bad failures, i.e. those initiatives that fail because they were high risk encountered unpredictable pitfalls and those that failed because of poor planning, poor management and poor execution.

FORBES: We Never Fail

Many people fail to find their passion because they either fail to search methodically or search persistently.

CNN: Want a great career? Find your passion