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。

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.

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五角大楼的F-35隐形战机和美国海军圣安东尼奥级两栖舰都曾遇到过发动机难题。

Just ask the designers of the Pentagon’s F-35 stealth fighter and the U.S. Navy’s San Antonio-class amphibious ships. Both have been nearly sidelined by engine woes.

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尽管如此，设计师也不能让赛车过于光滑，因为适量的空气有助于驱散现代一级方程序赛车发动机所产生的巨大热量。

Despite this, designers can't make their cars too 'slippery', as a good supply of airflow has to be ensured to help dissipate the vast amounts of heat produced by a modern Formula One engine.

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