More than meets the eye
如果说某事或人 more to something than meets the eye，意思就是此事或人并不象起初看到的那样简单。
1. I don't like Peter's new girlfriend – she seems sweet but I think there's more to her than meets the eye.
2. There's more to the manager's report than meets the eye – I think there could be redundancies.
3. I love Superman. You think he's just a normal guy, but there's much more to him than meets the eye!
请注意：注意英语里还有一个同眼睛这个词连用的短语 easy on the eye，这个短语的意思是很好看。
1. I love watching Cristiano Ronaldo play football. He's so easy on the eye.
Iris recognition technology is used to identify people by looking at their eyes, as individual eye patterns are complex and unique. The biometric technology is widely used for border control in airports.