They whizz through optical fibres, rarely getting lost or interfering with one another (which is why different coloured signals can be sent down a single fibre, to multiply its capacity).

它们通过光纤飞速传输，几乎不丢失数据也不被其他东西干扰（这就是为什么不同的信号可以在同一根光纤中传输以倍乘它的容量）。

youdao

Robotic cars would then whizz up and down the descending cable, providing a means of reaching orbit that does not rely on dangerous and expensive rockets.

ECONOMIST: Space lifts