They would take off and land in a circular motion, in conjunction with the air currents generated by the magnetic field energy.
它们在旋转中起降，与由磁场能量发出的气流有关。
Any current not needed for the magnetic field powers an infrared laser trained on satellite dishes back on Earth, designed to collect the energy.
产生磁场后额外的能量转化为红外激光，激光指向地球上收集能量用的卫星天线。
So actually, if you just look at magnetic fields and transformers or power adapters, and things like that, you precisely extract energy from the magnetic field.
实际上，如果你观察磁场的话，变压器和电源配适器等类似的装置，它们都是从磁场里面得到能量。
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