即使矿源比承租人预测的要少，或者矿源是不可开采的形式，这也是不可退还的。
This is nonrefundable, even if the source of the mineral is less prevalent than the lessee predicted it to be or if it is in an unextractable form.
域名注册费用和其它相关费用均不可退还。
Domain registration and application fees are not refundable.
会籍费用均不可退还。
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