As feathers became larger over time, flapping flight evolved and birds finally became fully air-borne.

随着时间的推移，羽毛变得越来越大，扑翼飞行逐渐发展，鸟类最终完全可以在空中飞行。

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Because they were bipedal, their arms were free to evolve flapping flight, which cannot be said for other reptiles of their time.

因为它们是两足动物，它们的手臂可以自由地进化出拍打的翅膀，这在当时的爬行动物中是不可能的。

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As micro flapping flight is investigated further, its control is paid more attention to.

随着微扑翼飞行器研究的不断深入，对其控制问题研究已引起了人们的重视。

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Someone has achieved short bursts of human-powered, wing-flapping flight!

FORBES: Sorting Out the Truth

Its landmark event is the Man-Powered Flight, for which contestants build rudimentary wings and propellers and hurl themselves off the harbour wall, flapping wildly.

BBC: The Channel Islands�� surviving lore