pro rata /ˈprəʊ ˈrɑːtə/

• 1. 

  ADV If something is distributed pro rata, it is distributed in proportion to the amount or size of something. 按比例地 [正式] [ADV after v]

  例：

  All part-timers should be paid the same, pro rata, as full-timers doing the same job.

  所有兼职人员都应按比例地与全职人员同工同酬。

• 2. 

  ADJ Pro-rata is also an adjective. 按比例的 [ADJ n]

  例：

  They are paid their salaries and are entitled to fringe benefits on a pro-rata basis.

  他们领工资，同时还能按比例享受附加福利。