nonentity造句

1、This part is the fulcrum of the whole system because the system is nonentity without it.
这个部件是整个系统的关键因为缺了它系统就玩不转了。

2、How could such a nonentity become chairman of the company?
这样的庸才怎么能当公司的董事长？

3、I spoke to some nonentity at the company who couldn't give me any information.
我跟公司一个小人物谈了一会，他什么信息也未能向我提供。