an occasion when someone appears in public

It was his first appearance on television/television appearance as president. 这是他就任总统以来首次在电视上亮相。

She will be making a public appearance, signing copies of her latest novel. 她将公开亮相，为自己刚刚出版的小说签名售书。

an occasion when someone goes to court to be officially involved in a trial

This was the defendant's third court appearance for the same offence. 这是被告因为同一桩罪行第三次出庭受审。

a public performance by an entertainer

He made his first stage/TV appearance at the age of six. 在6岁时他首次登台演出／在电视上亮相。

to be present somewhere for a short time

I didn't really want to go to the party, but I thought I'd better put in an appearance. 我真不想参加这个聚会，但是我想还是露个面的好。

You'd think that at least one of the authors could have put in an appearance for last night's premiere.

She felt that she should put in an appearance downstairs, however brief.

We're waiting for the First Lady to make an appearance at the convention.

The two police forces alerted each other as soon as the suspects made an appearance.

the way a person or thing looks to other people

a middle-aged man of smart appearance 一个外表整洁的中年男子

You can alter/change the whole appearance of a room just by lighting it in a certain way. 只要在灯光上做些文章，整个房间面貌就会焕然一新。

There was nothing unusual about/in her physical appearance. 她的外表并没有什么特别之处。

The large car outside the house gave the appearance of wealth (= suggested wealthy people lived there). 住宅外面停的那辆大轿车显示出主人很富有。

Appearances can be deceptive. 人不可貌相。

what things look like or seem to be rather than what they actually are

He was a far more complicated man than outward appearances suggested. 他这个人实际上很难懂，与其外表相去甚远。

Judging by appearances, the organizers have spent a lot of money on the event.

She seemed friendly and easy-going, but appearances can be deceiving.

We are concerned that the committee is concerned with appearances rather than reality.

Contrary to appearances, the Scottish government did not change much during those years.

judging from what can be seen

To all appearances their marriage is fine, but I think she gives him a bad time in private. 从表面看他们的婚姻很美满，但我觉得在私下里她不会给他好日子过。

From all outward appearances, he seemed like the perfect volunteer.

To all appearances, the film is a straightforward documentary.

From all appearances, he was oblivious to the financial crisis.

He was, by all appearances, a model husband and father.