"apple of one's eye" 出现於圣经里：诗篇17:8：Keep me as the 'apple of the eye' ,hide me under the shadow of thy wings;《申命记》三十三章的第十节：In a desert land he found him,in a barren and howling waste.He shielded him and cared for him; he guarded him as the 'apple of his eye'.
意思是你是我的挚爱或最宝贵的,意译做汉语 你是我的掌上明珠.
另外九把刀的电影作品 那些年,我们一起追的女孩 英文名就是You are the apple of my eye