unofficial meaning in English
adj.
非官方的，非正式的；非法定的。 an unofficial candidate 非正式候补人。
adv.
-ly
Examples
- The statement is unofficial and not binding on either country .
本声明系非官方性的，对两国均不具有约束力。 - He is a kind of unofficial adviser , but i am not sure exactly what he does .
他像个非官方的顾问，但说不好他究竟是干什么的。 - Indignity or not, he would change his unofficial shirt for a regulation one .
不管丢脸不丢脸，他一定要把普通衬衫换成规定的衬衫。 - We had still another name for her, "the unofficial vice president". that's what it really amounted to .
我们还奉送她一个称呼，叫“非官方的副总统。”这个称呼确实名副其实。 - But this does not rule out unofficial discussions
但这并不排除进行非正式的讨论。