我们白跑了一趟，他们不在。

We had a wasted trip—they weren't in.

《牛津词典》

很遗憾你白跑了一趟。

I'm sorry you've had a wasted (ie unnecessary, fruitless) journey.

youdao

建议我们到这儿来借钱的人让你白跑了一趟了，我从不借钱。

The people who advised to come to me for money sent you on a fool's errand. I never lend money.

youdao

原来，A口外的视线被刚竖起的施工围遮住了，乘客误以为白跑了一趟。

Originally, the construction of a port view was erected just around the block, the passengers mistakenly Baipao trip.

youdao

原来，A口外的视线被刚竖起的施工围遮住了，乘客误以为白跑了一趟。

Originally, the construction of a port view was erected just around the block, the passengers mistakenly Baipao trip.

youdao