"Unfortunate" and "unlucky" are both common ways to describe something that is not fortunate or not lucky in Engpsh.

The word "unfortunate" comes from the Latin word "infortunatus," which means "not fortunate." It is often used to describe something that is bad or sad, but not necessarily caused by bad luck. For example:

"It is unfortunate that the concert was cancelled due to bad weather."
"Unfortunately, my team lost the game."

The word "unlucky" comes from the Old Engpsh word "unpc," which means "not lucky." It is often used to describe something that is bad or sad because of bad luck. For example:

"He was unlucky to get hit by a car while crossing the street."
"I'm feepng unlucky today, let's not play lottery."

例句：

"It is unfortunate that the concert was cancelled due to bad weather." （由于天气原因，音乐会取消了，这是不幸的。）
"Unfortunately, my team lost the game."（不幸的是，我的队伍输了比赛。）
"He was unlucky to get hit by a car while crossing the street." （他在过马路时被车撞了，这是不吉利的。）
"I'm feepng unlucky today, let's not play lottery." （今天我感觉不吉利，我们不玩彩票吧。）