What's the meaning of this little detail of Zooey's appearance?

左伊外表上的这个小细节是什么意思呢？

耶鲁公开课 - 1945年后的美国小说课程节选

I mean, on the outside they all look pretty similar,

我是说，从外表上来看，它们看上去很相似，

伦敦的金融中心地 - SpeakingMax英语口语达人

There is typically a council of aristocrats; that is the outfit that counts.

只有典型的贵族议会,至少外表上是这样的

耶鲁公开课 - 古希腊历史简介课程节选

So we believe that looks don't matter and unfortunately they do.

我们认为外表不重要,很不幸的是，他们口是心非。

耶鲁公开课 - 心理学导论课程节选