这种摩托车脚踏装置使用安全。

The motorcycle pedal device has use safety.

youdao

进入试验场，我看见两套正运转的空中脚踏车模拟装置。 轨道在树和玉米地间穿进穿出，一个是8字形悬轨，另一个的8字有大概一英里长。

When I pulled into the property, I could see two functioning test models of Skyride weaving in and out of the trees and cornfields; one a figure-eight track, the other an eighth of a mile around.

youdao

特点：采用气动脚踏开关水平压入，有限位装置，一致性较好。

Features: use pneumatic foot stepping switch to press in horizontally, with stop device, good consistency.

youdao