official
US /əˈfɪʃ.əl/
UK /əˈfɪʃ.əl/

形容词
1.
官方的, 正式的
relating to an authority or public body and its activities and responsibilities
示例:
•
The mayor made an official announcement.
市长发表了官方声明。
•
This is the official website for the event.
这是本次活动的官方网站。
2.
正式的, 经批准的
having the approval or authorization of an authority
示例:
•
The results are not yet official.
结果尚未正式公布。
•
The decision became official after the board meeting.
董事会会议后,该决定变得正式。
名词
1.
官员, 公务员
a person holding public office or having official duties, especially as a representative of an organization or government
示例:
•
A government official addressed the press.
一位政府官员向媒体发表讲话。
•
He is a high-ranking official in the company.
他是公司的高级官员。
在 Lingoland 学习这个单词