订单积压水平是显示经济是否良好的一个重要指标。
Backlog level is an important indicator to show whether economy is in good condition.
一个是航空业的经济周期，无论波音公司的客户遇到怎样的麻烦，它仍然拥有相当的数量的积压订单。
One is the aerospace cycle, and Boeing, whatever troubles its airline customers are having, still has a backlog of orders.
该公司在未来的2两年半时间里已经有了246个积压订单。
The company has a backlog of 246 orders for the next two and a half years.
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