deciduousadj.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deciduous dental germ乳牙胚deciduous fruit crops落叶果树Deciduous molar tooth乳磨牙Deciduous tooth decay乳牙龋齿Deciduous molar sinus乳磨牙Deciduous front teeth乳前牙deciduous skin peeling年度性皮肤剥脱deciduous forest fauna落叶林动物群Deciduous canine tooth乳尖牙Deciduous molar caries乳牙龋病