If you have already paid the full subscription appropriate to your class, please state date and amount sent. 如果您已经缴纳了全额会费,请说明缴纳日期和缴纳金额。
In the event of a change in any subscription fee, a notice regarding the subscription fee change will be posted or you will be sent an email prior to the effective date of the fee change. 如果任何订阅费发生了改变,费用变化生效日期之前会发布有关其改变的通知,或者你将会收到电子邮件。