由于我们所签的是一份标价伸缩合同，价格可以不经事先通知而变动。
As what we have signed is a fix - price contract with escalation, the price can be changed without notice.
按照直接标价法，汇率标价是以一定单位的外国货币为标准，折算为一个随着汇率变动而变动的本国货币数额。
Under the direct quotation method, the rates are quoted in terms of a variable number or home currency per fixed foreign currency unit.
按照间接标价法，汇率标价是以一定单位的外币为标准，推算出一个随着汇率变动而变化的本国货币数额，中国采用的就是这种方法。
Under the indirect quotation method, the rates are quoted in terms of a variable number of home currency per fixed foreign currency unit, and China adopts this method.
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