purchase cancellation

基本解释

Debt-nature swap----The purchase and cancellation of developing country debt in exchange for environmentally related action on the part of the debtor nation.
自然债务交换——发展中国家对环境关系行为的交换债务购买和取消在债务人一方国家。
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Fortunately, I had not yet bought my airplane ticket, so although the cancellation was annoying, it could have been worse had I made the purchase and been stuck with it.
幸运的是，我还没有购买机票，因此尽管取消令人恼火，如果我购买了（机票）并在这件事上死缠烂打，情况会更糟。
As we are unable confirm the identity of the billing customer on this order by email, we ask that the cardholder of the purchase call us for the cancellation reason.
因为我们不能通过电邮来确认此订单付款人的身份，我们要求支付本次订购的持卡人打电话给我们来了解取消原因。
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