A car came from nowhere, and I had to jump back into the hedge just in time.

一辆轿车不知从哪里突然开了过来，我不得不赶紧向后跳进篱笆，险些来不及。

《柯林斯英汉双解大词典》

Look at the Tea Party. People think it came from nowhere.

看看茶党吧，人们都不知道它是从哪里冒出来的。

youdao

In the last seconds of the race, he came from nowhere and won.

在比赛的最后几秒钟，他从后面不知什么地方突然冒出来并赢得了胜利。

youdao

Sehwag playing all round the line and back go the stumps - Lordy, that came from nowhere.

BBC: England v India as it happened

The Japanese came from nowhere to blitz the appliance market, eventually bankrupting Zenith and forcing Admiral and RCA to sell out.

FORBES: Perspectives

Because this money came from nowhere, and if you can get money out of nowhere you can get a lot of it.

FORBES: Market Gives Bronx Cheer For Bernanke's QE2