I'm out of luck. 我运气不好。
I'm in luck. 我很走运。
例句：
I'm out of luck——I left my key at home again.
我运气不好——我又把钥匙落在房间了。
I met that guy three times in a day.It looks like I'm out of luck today.
看上去我今天运气不好——我今天一天内遇到他三次。
I'm out of luck.How could this happen to me?
我运气不好。这怎么会发生在我身上？
