- for each day (used in financial contexts)每日地（的）, 按日计（的）（用于财经）：
as adv. he agreed to pay at certain specified rates per diem他同意每天按一定的数额来支付工资
as adj. they are now demanding a per diem rate.他们现在要求按每日的利率结算。
- an allowance or payment made for each day每日津贴; 每日酬金。
词源
early 16th cent.: Latin.