又有一条新航线开航了.Another new air route has been opened up.这船从香港开航驶往上海.The vessel is sailing from Hongkong to Shanghai.你们轮船什么时候开航?When will your ship sail?...
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....