It's a self-balancing transportation device or some people call them rideables.

它是一种自动平衡交通工具，有些人称其为乘骑悬浮滑板。

It wasn't a gritty, dangerous transportation device.

它不是一个坚韧、危险的运输工具。

This was not the image the elevator industry wanted for its new transportation device.

这并不是电梯行业想要的新型运输设备的形象。

In Amish areas, horse drawn buggies still serve as a local transportation device and the faithful are not permitted to own automobiles.

在Amish地区，轻便马车仍是当地的交通工具，信徒们不允许拥有汽车。