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。

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The easier level of the challenge requires flights of 90 seconds and a landing on a small, flat circular pad.

稍容易的初级挑战级别要求飞行90秒，然后在一个小型圆形平台上降落。

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A change in height across the courtyard is highlighted by the flow of water along a channel that drops down from the planted level to the cobbled floor and then funnels into a circular pond.

庭院中的高度变化通过沿着从种植水平下降到鹅卵石地板的通道的水流强调突出，最后汇聚成一个圆形池塘。

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Mr. Stern buried the warehouse part of the project into a contoured landscape so that he could create two entrances a kind of church and state separation for the museum and archive facing north, across the street from SMU's Greek Row, and for the George W. Bush Institute, a public-policy think tank, with a more formal circular driveway on a lower level facing west.

WSJ: Bricks and Immortality | George W. Bush Presidential Center | By Julie V. Iovine

The topmost section features a physical volume dial that also serves as a mute switch when pushed, surrounded by a circular cluster of LEDs (for clockwise-flowing level indication) and then a secondary outer ring of capacitive buttons and LED indicators.

ENGADGET: Turtle Beach XP Seven Series headset review: a new era of tournament-grade gaming audio

Shocked and dismayed, the purveyors of conventional wisdom made the circular argument that the unexpected rise in the overall price level was caused by the rise in commodity prices, especially the tripling of the price of oil.

FORBES: Higher Inflation Is On The Way