基本解释adj.每年落叶的；非永久性的；（牙齿或角等）定期脱落的；蚂蚁交合后脱落翅膀同根派生 英汉例句用作形容词 (adj.)Very few plants in my garden are deciduous.我公园里的落叶植物很少。The climate is not suitable for deciduous vegetation.这种气候不适合落叶植物的生长。