1.appearance的基本意思是“出现”,可指人的突然出现或出席某宴会,也可指演员等登台亮相或在电视、电影中露面,还可指疾病等到了最后阶段所显现出的一些症状,常与动词make, put搭配。也可作“外表”“外观”解,常指经常性的总体印象,指人时,可指人的容貌或着装,既可用单数形式也可用复数形式; 指物时,可指建筑物的整体外观。
2.appearance作“种种迹象”解时,一般用复数形式。

keep up appearance
撑门面,装阔气 maintain an outward show
I have other things to do than keeping up appearance.比起装门面我还有其他事要做。

in appearance
看起来,外貌上 looking like
In appearance, he was a little like his father.他看起来有点像他的父亲。

to all appearances
看来,显然 so far as can be seen
To all appearances, they are very much in love.显然他们正处在热恋之中。

The sudden appearance of the teacher caused them to run away.老师突然出现,他们就逃跑了。
The last stage of the disease is marked by the appearance of blisters on the skin.这种疾病最后阶段的特征是皮肤上出现水疱。
I will have to put in an appearance at a reception tomorrow.明天我得出席一个招待会。
She has made several television appearances recently.她最近参加一些电视演出。
His appearance is very neat.他外表很整洁。
She was a young woman of good appearance.她是一位年轻美貌的女子。
It had the appearance of an 18th century church.它的外观像一座18世纪的教堂。
He drew a conclusion by appearances.他通过种种迹象得出结论。

appearance, aspect, countenance, face, feature, look, visage
参见face条。

appearance, phenomenon
参见phenomenon条。

不要以貌取人。
［误］  Don't judge by appearance.
［正］  Don't judge by appearances.
［析］  指看得见可能是假象的外表时, appearance应该用复数形式,区别于一般的外表或相貌。

［同义词］   figure, form, guise, outline, shape
［反义词］   disappearance