They could power electrically driven wheels, letting an aircraft taxi without using its main engines.
它们可以给电力驱动的起落架轮子动力，让飞机不用主引擎就能在地面滑行。
2
Zipping down the main hallway, the foot-long (0.3 meter) red robots pivoted this way and that on their three wheels, resembling nothing so much as large insects.
一英尺高的红色机器人群快速地沿着主要走廊移动着，它们靠着下面的三轮转脚移动，就像一群大型昆虫。
3
Tesla's main strength has been stellar technology for electric car batteries and powertrains-the portion of the car that actually transfers energy from the engine and transmission to the wheels.