备用轮胎 bèiyònglúntāi spare tire Definitions Defs Origin Strokes Stroke Words Sentences Sents 备用 備用 bèiyòng adjective reserve; spare; backup to keep in reserve for future use; ready for use as a backup or standby轮胎 輪胎 lúntāi noun tire tire; pneumatic tire made of rubber, usually consisting of an inner tube and an outer casing
