如果你是一个幸运打进电话的人，且被选中参赛，你就可能要发财了。

If you are one of the lucky callers chosen to play, you could be in the money.

《柯林斯英汉双解大词典》

如果你很幸运收到了礼物，把它们放在安全的地方。

If you're lucky enough to receive gifts, keep them in a safe place.

youdao

有时，如果他幸运的话，学校保安会让他溜进空走廊里避寒。

Sometimes, if he was lucky, the school guard would let him slip into the empty corridors to escape the cold.

youdao

All right? If I'm gambling, I'm saying, gee, if I'm really lucky, it'll be only on this side, and I've got a little bit of work to do, but if I'm unlucky, I'm scrawed, the past pluperfect of screwed, OK., or a Boston fish.

如果我够幸运的话，目标数就会在这边的，这会大大减少我的工作量，但如果不幸运呢？我就完蛋了，我就得再从剩下的这么大的数组里找了，这很痛苦，因此选中位数是正确答案。

麻省理工公开课 - 计算机科学及编程导论课程节选

If you're lucky, as another person; if you're not so lucky, as a pig or a donkey or an ant or what have you.

幸运的话,转世为人,如果不幸运的话,可能会变成猪,驴,蚂蚁等等

耶鲁公开课 - 死亡课程节选

And if you are going to get one of these, you are really lucky.

如果你买一台，那就真是幸运了。

斯坦福公开课 - 戴尔CEO-Michael.Dell谈创业和发展课程节选