“catch one's eye”不是指“抓住眼睛”，真实含义是引起某人注意；吸引眼球；引人瞩目。

【例句】
A postcard, a present from my grandfather, would likely catch one's eye.
一张来自我祖父的明信片可能会引起不少人的注意。

I see that the new girl in school has caught your eye.
我看到学校新来的那个女孩吸引了你的目光。