单词	synsacrum
释义	synsacrum noun syn·​sacrum "+ : a solidly fused series of vertebrae in the pelvic region in birds, dinosaurs, and pterosaurs comprising usually the last rib-bearing or thoracic vertebra, the two sacral vertebrae, and a varying number of caudal vertebrae compare sacrum Word History Etymology New Latin, from syn- + sacrum
随便看	itineracy itinerancies itinerancy itinerant itinerantly itinerants itineraria itineraries itinerarium itinerariums itinerary itinerate itinerated itinerates itinerating itineration itinerations itmo Itneg itnegs ITO Itonama itonamas Itonididae its

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