It also focuses on the demand for passenger cargo aircraft over a certain period.
它也侧重于客运货运飞机在一个时期内的需求。
We'll put this on the market for a two month trial period, to see if there is a good demand for it.
我们推出这项产品，会以两个月为试卖期，看看市场需求量如何。
We'll put this on the market for a two month trial period, to see if there is a good demand for it.
我们推出这项产品，会以两个月为试卖期，看看市场需求量如何。
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