注册费怎么翻译成英文

第六届华人心理学家学术研讨会注册费
registration fee for the 6th Chinese psychologist academy seminar

注册费：registration fee 或 registry fee 或 organization tax
公司注册费：company registration fee
土地注册费：land registration fee
附加注册费：ARF
报到注册费：registered fee

Registration fees

registration fee
fee不可数，不能加s

register fee

registration fee