1、officially

官方的；正式的

According to the official figures, over one thousand people died during the revolution.

根据官方数字，1,000多人在这场革命中丧生。

An official announcement is expected in the next few days.

预计过几天会发布一项正式声明。

（解释、理由等）冠冕堂皇的，桌面上的

The official explanation for the cancellation of the party conference is that there are no premises available.

官方对取消此次政党会议作出的解释是没有场地。

The official reason given for the President's absence was sickness.

对外公布的总统未到场原因是身体有恙。

公务的；公职的；公事的

The President is in Brazil for an official two-day visit.

总统正在巴西进行为期两天的正式访问。

2、come back

回忆起;回想起来

He was also an MP — I'll think of his name in a moment when it comes back to me.

他当时也是一位国会议员，他的名字我得想一下才能记起来。

When I thought about it, it all came back.

当我回想起来，往事全都涌上了心头。

重新流行;再度时兴

I'm glad hats are coming back.

我很高兴又开始流行戴帽子了。