袖珍自行车提供最低限度的速度和速度的道路，因此他们可以简单地称为火箭…

Pocket bicycles offer minimum speed and velocity on road and thus they can simply be termed as rocket …

youdao

袖珍自行车提供最低限度的速度和速度的道路，因此他们可以简单地称为火箭…

Pocket bicycles offer minimum speed and velocity on road and thus they can simply be termed as rocket …

youdao