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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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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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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