be the lucky number

常见例句

A reference number will be provided instantly after the lucky draw registration.
参考编号将会于登记完成后即时提供，以作参考。
forms.online.standardchartered.com
THE Chinese consider eight to be a lucky number because it sounds like the word meaning "prosperity".
中国人认为八是个幸运数字，因为它念起来像“发”。
Of course, I happen to be one of those lucky people who could be repeated the number out loud, and then actually 'hear it' for a long time, simply by listening. Try it some time.
当然，我碰巧是那种幸运的儿，总是能被高声重复，然后听好长时间，只是简单的听、尝试。