a.

1. 官员的；公务上的
   The President's official duties include being Commander in Chief.

   总统的职责包括担任总司令。

2. 官方的，法定的；正式的
   Is the news official?

   这消息是官方发布的吗？

3. 摆官架子的；讲究形式的
   His official airs offended her.

   他那付官架子令她十分不快。

n.[C]

1. 官员，公务员
   The mayor is an elected official.

   市长是选举产生的官员。

2. （公司，团体的）高层职员，干事
   He is an official at the local bank.

   他是这家地方银行的高级职员。

adj.

1. relating to an authority or public body and its activities and responsibilities.
2. having the approval or authorization of such a body.

n.