And then maybe vote yet again, just for luck.

而后，如果运气好，或许又可以再多投一次。

youdao

I'll take just a cup for luck.

为讨个吉利我就喝一杯。

《新英汉大辞典》

Nancy:Doing pot luck in someone’s house means that you just look through there frigerator for left overs and eat whatever’s there.

Do pot luck in someone’shouse就是在朋友家的 冰箱里找些剩下的食物，有什么就吃什么。

youdao

Call it faith, karma, good juju or just plain luck, but we have all hoped for just a little help in these difficult times.

FORBES: How Much Faith Do We Rely On?

As far as the farmers are concerned, it is just a case of bad luck for the British.

CNN: UK outbreak raises questions

Ashton said the Barkley injury, a strained hip flexor, was just another piece of bad luck for the team, coming after the injury that ruled Dave Strettle out of the tournament altogether, and Wilkinson out of the first two games - all three of them non-contact training incidents.

BBC: England face crisis at fly-half