Inside a hanger at a Swiss airfield is the prototype of an aircraft (illustrated above) that does not use any fuel at all.

在瑞士一个机场的飞机库里面有一架完全不用燃料的飞机原型（如上图所示）。

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This Taranis prototype won't ever go into service, but will prove technologies and concepts for future aircraft, BBC reports.

BBC报道说，这架塔拉尼斯原型机不会投入服役，但会为未来的飞机检验技术和概念。

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Yet inside a hanger at a Swiss airfield is the prototype of an aircraft (illustrated above) that does not use any fuel at all.

但是在瑞士一个机场的飞机库里面却有一个完全不用燃料的飞机原型(如上图所示)。

youdao

The FAA's approval of the plan allows for limited test flights for two aircraft equipped with prototype versions of the battery fix.

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Clear and purposeful programmatic objectives and milestones must be established, including a decision now to build a useful prototype aircraft to fly by 1995.

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Cobra UK has branched out into the aerospace industry, and is developing a prototype lightweight aircraft seat.

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