voluntary payment的意思|示意

A voluntary transfer of money, a negotiable instrument, or other thing by the obligor to the obligee, made as interest on or part payment of or collateral security for the antecedent indebtedness;

or债务人主动向债权人移交款项、流通票据、或者其他物品，以做先前债务的利息、部分付款、或者附加担保的；

Booth will only be assigned when full payment is received. First come, first served. Once a booth is assigned, voluntary cancellation are not refundable.

全额费用到帐后此申请开始生效，先选先定；一旦生效，恕不退还。

Is the national statutory social security insurance, where each entry when the "voluntary" fill in "guarantee" that a "voluntary" non-payment of social security!

社保是国家法定保险，在这里入职时每人“自愿”填写“保证书”，表示“自愿”不交社保！