Before the first nonstop flight made in 1949, it had been necessary for all planes to land for refueling.

在1949年第一次直达航班开通前，所有飞机都必须要着陆加油。

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With 30 different sizes and models in 3 or 4 column design REIS offers a broad program for trimming and machining of castings in all planes with shortest cycle times.

3柱或4柱设计，共有30余种不同尺寸和型号。莱斯提供的铸件多面修整和加工的整套程序使得生产节拍达到最短时间。

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All planes out of Heathrow have been grounded by the strikes.

所有由希思罗机场起飞的飞机均因罢工而停飞。

《牛津词典》

Officials would order all lights in a city turned off to make it difficult for enemy planes to find a target in the dark of night.

VOA: special.2009.11.15

All of the men say they never intended to bring down any planes, but rather they wanted to unleash a series of harmless stunt explosions on famous landmarks here to in their words, "expose the failings of Western foreign policy."

VOA: standard.2009.09.07

But in terms of total orders for all planes this year, Boeing retained a large lead over Airbus.

BBC: Airbus and Boeing hit by plane cancellations

Not all planes across oceans have data-link capabilities, and high-frequency radio is still used with some flights and as a backup with others.

WSJ: How New Air-Traffic Control Systems Operate Over Oceans

That can't change until all planes have more accurate navigation systems.

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