单词happen
v.: 发生；出现；向对方表示异议或不悦等
linkv.: 碰巧；恰好
网络: 偶然；事情发生；事情做主语
（尤指偶然）发生，出现:
to take place, especially without being planned
（作为结果）出现，发生:
to take place as the result of sth
（向对方表示异议或不悦等）:
used to tell sb sth, especially when you are disagreeing with them or annoyed by what they have said
碰巧；恰好:
to do or be sth by chance
犯
很普遍
引起的
抖搂
重复
有
降临
发展
〔后接不定式〕偶然…,碰巧…
发生,〔口语〕出现
过去分词：happened
现在分词：happening
第三人称单数：happens
adv.+v.:
really happen,actually happen,probably happen,rarely happen
v.occurcome abouttake placego onensue
Necessity creates pressure and forces you invent something or to make it happen or to use your potentiality.
需求创造压力，逼着你去发明一些东西，或者让某些事情发生，或者发挥你的潜力。
"But I am very confident that with the team we have got assembled we are going to be able to make it happen. "
“我们有很多工作要做。但是，我有信心，我们组成的团队可以完成这个任务。”
The technology to make this system happen is all here and functional. It just needs some visionaries to push for implementation.
实现这一原型的技术都是现成的，只需要一些有远见的人将其实施。
Entrust the business managing money matters to be one kind of financial products , its turn up , in fact do not happen to.
委托理财业务作为一种金融产品，它的出现，其实并非偶然。
This will happen at the last of the children of that baby boom generation finish high school.
这将会在最近的儿童发展一代结束高中时发生。
If all this were to happen, South Africa"s press would end up being subject to restrictions not seen since the days of apartheid.
如果这些都成真，南非媒体将会遭到自种族隔离制度废除后从未有过的管制。
Well, it did happen, but right now it does seem to have been a bad idea for exactly the reasons the skeptics cited.
嗨，事情却的确发生了。不过，现在看来，正因为怀疑论者列举的理由，当时想法就是错的。
However, he said only public demand for his plan would make it happen, given likely resistance from banks and national governments.
索罗斯声称，这些措施可能遭到银行和各国政府的反对，但只有公众的压力才能让此变成现实。
It would never happen again, she resolved, and she would see less of him in the future.
她下定决心不让这样的事再发生，以后要跟他少见面。
As you can see, lots of things happened with a case class that don"t normally happen for a traditional class.
如您所见，伴随case类发生了很多传统类通常不会引发的事情。