付款授权书的英文：
authorization to pay

pay是什么意思：
n. 工资，薪金；报偿；惩罚
v. 付钱给；偿还；给予（注意等）；致以（问候等）；报偿；付款；值得

You have to pay storage.
你须缴纳保管费。

Unless paying by credit card, please pay in cash.
请付现金，除非使用信用卡。

wage [ pay ] scale
工资等级

Program a computer for pay calculations
为计算机计算工资作程序设计

to pay; to hand in; to render to
交纳