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）。

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)。

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

然而，在一个瑞士机场的机库内，停放了一架不需要任何一点燃油的飞机。