橡胶跑道、胶管加工。

Rubber runway, rubber processing.

youdao

人行道上所用的橡胶其实十分坚固。甚至可能比田径场上的跑道还要硬一些。

Kenney says the rubber is very solid - probably harder than a running track.

youdao

人行道上所用的橡胶其实十分坚固。甚至可能比田径场上的跑道还要硬一些。

Kenney says the rubber is very solid - probably harder than a running track.

youdao