他已经在擦汽车轮毂了。He was already buffing the car's hubs.我在前后轮毂上都抹了润滑油，还调校了刹车。I greased front and rear hubs and adjusted the brakes.轴和轮毂通常用键固定在一起.Shafts and hubs are usually fastened together by means of keys....

“轮毂”的拼音为：lún gǔ...

“轮毂”的英语可以翻译为：hub，boss of wheel，nave of wheel，wheel boss ...