原文：An agreement that the exporter and importer have entered into on sales terms and conditions becomes a binding contract,which is a firm commitment that is acceptable to both buyer and seller after it is confirmed by both parties in writing.
译文：

原文：An agreement that the exporter and importer have entered into on sales terms and conditions becomes a binding contract,which is a firm commitment that is acceptable to both buyer and seller after it is confirmed by both parties in writing.
译文：进出口商就销售条款和条件而达成的协议是有约束力的合同，是经双方书面确认后双方都接受的确定的承诺。

出口商与进口商之间就销售条款所达成的协议成为一个有约束力的合同， 它经过买卖双方以书面形式确认后就是双方都能接受的确定的承诺。 （ “terms and conditions” 译为 “条款” 得两分）