Definition: approved by the government or someone in authority Level: B2
将对此事件进行官方调查。
There will be an ___official investigation into the incident.
我们被邀请参加了展览的官方开幕式。
We were invited to the ___official opening of the exhibit.
这是一份由当局签发的官方文件。
This is an ___official document issued by the authorities.
