环翼机没有尾翼，而是采用一个延伸的圆形作为外部引擎，帮助飞机完成水平飞行和垂直起飞降落。

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.

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我想有一个横向的水平，垂直的水平，和一个圆形的水平。

I wanted to have a horizontal level, a vertical level, and a circular level.

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