He is confident that, someday, with his crafts maneuverability and energy-saving vortex generator (a device that creates lift much like dragonfly wings) you wont need airplanes anymore.

他相信，总有一天，与他船的机动、节能涡发生器(显示器制造电梯很像蜻蜓翅膀)你不用飞机了。

youdao

Introduces the working-case and the controlling-process of the mine lift, analyses the principle of variable frequency adjust speed and energy saving in terms of theory.

介绍了煤矿提升机的工作情况和控制过程，从理论上分析了提升机变频调速和节能的基本原理。

youdao

It will, he claims, have a lift-to-drag ratio eight times better than a jet airliner's, with a consequent saving in energy.

ECONOMIST: Maglev trains