下沉: 1.(沉没) sink; subside; submerge 短语和例子这两条船同时下沉入海。 the two boats sank together into the sea.2.(陷下去) subside; sink; cave in 短语和例子地基下沉。 the foundations have subsided
摩托车轮胎: autocycle tireautocycle tyremotor cycle tiremotorcycle tiremotorcycle tyretype for motorcycle and scootertyre for motorcycletyres for motorcycle and scooter