Support came from an unexpected direction.

一个出人意料的来源提供了帮助。

《牛津词典》

When you're adaptable, sudden changes in direction or unexpected roadblocks don't bother you.

有了适应能力后，方向的突然变化或意外的障碍并不会对您造成影响。

youdao

We spend so much time working toward something, only to have the unexpected snare our attention and take us in a completely different direction.

我们花很多时间在某事上，却掉进那没想到的陷阱，分散了我们的注意力并带我们去到一个完全不同的方向上。

youdao

Trying to demystify the magic took us in an unexpected direction.

FORBES: On The Cover/Top Stories

Over and over again he took complex situations, understood their essence, and used that understanding to make a bold definitive move, often in a completely unexpected direction.

FORBES: Memories Of Steve Jobs

Longer term, were we served by more renewable power generators (wind, solar) we would be better protected against unpredictable price spikes in oil and gas markets that may come when political winds blow in an unexpected direction.

FORBES: Mike Gordon