coleopter

基本解釋

During takeoff, the coleopter would rise straight up like a rocket before alighting itself for cruise mode.
起飛時環(huán)翼機像火箭一樣筆直上陞，降落前一直処於巡航模式。
Instead of using wings, the coleopter employed a circular extension serving as the outer part of the jet engine while helping the aircraft achieve level flight, as well as vertical ascent and landing.
環(huán)翼機沒有尾翼，而是採用一個延伸的圓形作爲(wèi)外部引擎，幫助飛機完成水平飛行和垂直起飛降落。

an aircraft that has an annular wing with the fuselage and engine on the centre line