请问charge me flat percentage fee 其中FLAT作何解释。

请问charge me flat percentage fee 其中FLAT作何解释。 charge me 请问快递flat rate 和 per item 的区别是什么?老外的快递,flat rate 和 per item 有什么区别啊? 请问We only work the flat tariff of 36 hours per 英语翻译Important Note:Some courses charge fees on a flat fee per unit basis.This means that units have a set fee and are not necessarily determined by the method detailed above. flat flat flat flat Flat flat charge it to me 同题 charge charge charge. charge charge charge