We have never seen a manufacturer launch an aircraft without a firm order.

我们过去从没看到过制造商在没有确定订单的情况下便启动项目。

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The shipment of the goods should be made immediately upon the receipt of a firm order.

货物应该在收到正式签字的订货单后立即发出。

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By placing a firm order, an airline is committing to a buying and price schedule that stretches for years.

在确定订单后，航空公司就必须遵守一份为期数年的购买和价格合约。

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The order was in addition to a firm order of 10 E-190s signed earlier this year.

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The deal represents a firm order for 10 aircraft and an option for another 10.

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Boeing, for example, is used to rescheduling aircraft deliveries for hard-pressed customers (cancelling a firm order can cost a customer dear).

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