提出了最小安全飞行高度的有向性问题。
The orientation of the minimal safe flight height is researched.
在飞行过程中，它达到了3000英尺的高度并在一个安全的区域内进行了一系列轻巧的转弯。
During its flight, it reached 3,000 feet and performed a series of gentle turns all over a safe area.
越高耗费的燃料越少，而载人飞船能够长时间安全飞行的轨道高度就有上限。
But while higher is better from a fuel conservation perspective, there is an upper limit on how high it is safe to orbit humans for long periods.
火山突然喷发形成的烟云所聚集的高度尤其让海拔高度高于此的安全飞行变得困难重重。
In particular, sudden changes in its height made the job of flying safely above it a tricky one.
我将飞行参数报告给安全观察员以确定我具有足够的高度来完成这个滚转。
I transmit my parameters to the safety observer to make sure I have enough altitude to complete the roll.
这是最低的要求了，50000元会保证更安全的飞行高度。
That is the barest minimum, but $50,000 provides a much safer flying altitude.
飞行高度不仅是飞行安全的生命线，也是航空物探数据质量的生命线。
Altitude is not only the lifeline of flight safety, but also the lifeline of airborne geophysical data quality.
飞机已经开始下降高度，请您配合乘务员做好客舱安全检查工作，请您坐好系好安全带，收起小桌板，调直座椅靠背，打开遮光板，下降期间洗手间停止使用，为了飞行安全请关闭手提电脑等电子用品。
We are descending now, please fasten your seat belt and bring your seat back and table to the upright position, please open the window shades. Lavatory is not allowed to use during descent.
飞机已经开始下降高度，请您配合乘务员做好客舱安全检查工作，请您坐好系好安全带，收起小桌板，调直座椅靠背，打开遮光板，下降期间洗手间停止使用，为了飞行安全请关闭手提电脑等电子用品。
We are descending now, please fasten your seat belt and bring your seat back and table to the upright position, please open the window shades. Lavatory is not allowed to use during descent.
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