英语语法分析

During takeoff, the coleopter would rise straight up like a rocket before alighting itself for cruise mode.

起飞时环翼机像火箭一样笔直上升，降落前一直处于巡航模式。

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.

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。