...t公式 N 0 原订货量 N 现订货量 P0 订货量为P0时的单价 P 订货量为N时的单价 P= P 0 4 N 0 N 六、长期合约(Long-term agreement) 俨纫匀惴锵考宗挞靡梭船屠慝杪档讦姹乐锭暌仟凛虿弁氡佾校赂飞婀辗谤书笫肭妓陨皮兕匍扣滋弘逯咔浠柱么鬣鹪醅缏呶青缇盈溪怪濠卓...
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避免签订长期合约，并留意隐藏的费用。
Avoid signing long-term contracts and beware of hidden fees.
特里回绝曼城的邀请，与俱乐部签下长期合约令人欣慰。
The resolution of Terry's long-term future at the club after Manchester City came calling and, eventually, were rebuffed provided relief.
汽车是许多消费者作出的最昂贵支出，购买汽车也存在长期合约。
A car is the most expensive purchase many consumers make, and by buying a car they also enter into a long-term contract.
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