unlucky造句

He was very unlucky not to win.
他不幸输了。

It is ridiculously absurd to believe that the number 13 is unlucky.
相信数字13是个不吉祥的数字是荒唐可笑的.

It's a common superstition that black cats are unlucky.
认为黑猫不吉祥是一种很普遍的迷信.