购货凭证显示该机器购买于一年内。高新技术产业的一个特点是具有高附加值。
The pro of - of - purchase show the unit is bought within one year's time.
现场购买是当他们需要时的采购货物和服务，通常是在当前的市场价格。
Spot buying is the purchase of goods and services as they are needed, usually at prevailing market prices.
如果购买被批准后，该购货金额减去持卡人的可用的信用额度。
If the purchase is approved, the purchase amount is subtracted from the cardholder's available credit limit.
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