Today, commercial aircraft remove ice that accumulates on wings in-flight by redirecting hot air from the jet engines to the leading edge of the wings to keep them warm.

今天，商用飞机主要靠把从喷气式引擎排出的热空气引导到机翼的边缘，使它们变暖，以此来达到除冰的目的。

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They are also some 80% quieter because the mass of slower-moving air shrouds the noisy hot gases coming from the rear of the jet.

此外，由于引擎（发动机）外部运动较慢的空气覆盖了高温燃气排出引擎后部时的噪音，“高旁道比”（高涵道比）飞机的噪音指数下降了80%左右。

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The jet leaves contrails in its wake due to the temperature difference between the hot engine exhaust and the cold air.

这架喷气式飞机飞行时留下的凝结尾是由于其发动机与冷空气之间的温差造成的。

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This creates a jet of hot air which passes over an airfoil-shaped ramp channelling its direction.

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