Because the missile does not have establishing or controlling surfaces, it completely relies on the swinging nozzles of its first stage engine to maintain its course of flight.

因为导弹没有稳定或控制翼面，它完全地依靠在第一级发动机的摆动喷嘴去维持它的飞行航线。

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The first launch of Falcon 9 could change the course of human space flight.

猎鹰9号的首次发射可能会改变人类太空飞行的进程。

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As we've discussed, birds are apparently descendants of dinosaurs and shared many commonalities with some dinosaur species, like feathers and maybe even flight and of course egg laid.

正如我们讨论过的，鸟类显然是恐龙的后代，与一些恐龙物种有许多共同之处，比如羽毛，甚至飞行，当然还有产卵。

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Gravity bombs are designed to be dropped from planes and must be able to withstand vibrations and changes in air temperature and pressure during the course of a flight.

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Why, on the grounds of NASA's Goddard Space Flight Center of course.

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But it was, of course, the best flight I've ever had in my life.

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