It's pot luck whether you get good advice or not.

能不能得到好的指点那就全靠运气了。

Would you mind taking a pot luck at home?

你介意在家吃顿便饭吗？

We are having a pot luck dinner this Saturday .

我们这周六要聚餐，每个人得带一道菜过来。

Tom told me this morning to come at 7 p. m. and take pot luck.

汤姆今早邀我晚上7点去他家吃顿便饭。

You are welcome to eat with us, but you'll have to take pot luck.

欢迎你和我们一起吃饭，但是你要有什么吃什么。