He was jamming with his saxophone.他在即兴吹奏萨克斯管。He started his career in show business by playing the saxophone and singing.他的演艺生涯是从吹奏萨克斯和唱歌开始的。He took a saxophone from the Salvation Army but was caught and had to hand it b...
He was already buffing the car's hubs.他已经在擦汽车轮毂了。I greased front and rear hubs and adjusted the brakes.我在前后轮毂上都抹了润滑油，还调校了刹车。Shafts and hubs are usually fastened together by means of keys.轴和轮毂通常用键固定在一起....