purloin /pɜːˈlɔɪn/ ( purloining, purloined, purloins )

• 1. 

  V-T If someone purloins something, they steal it or borrow it without asking permission. 偷窃; 未经允许就借走 [正式]

  例：

  Each side purloins the other's private letters.

  双方都偷窃对方的私人信件。