客串演出的英文：
a guest appearance

guest是什么意思：
n. 客人；旅客；特别来宾；寄生动植物
v. 款待；当特别来宾
adj. 客人的；特邀的

visiting professor; guest professor
客座教授

Speed the parting guest
祝客人一路顺风

A constant guest is never welcome
常客令人厌

He guested on a television series.
他客串了一个电视系列剧。

The guest was pleased by the distinction but not overwhelmed.
来宾对这种破格礼遇感到高兴，但并没有受宠若惊。

appearance是什么意思：
n. 出现，来到；露面，出场；外貌，外观

appear in sight
出现于视域内

Appearances are deceitful
人不可貌相,海水不可斗量

They will appear later.
他们稍晚会露面。

Appearances are deceptive.
外表往往带有欺骗性(外表是靠不住的)。

Appearances are deceptive
外表欺人;勿以貌取人